21131901440

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20483}}^1$

素因数の和:20550

約数の個数: 160

約数和(自身を含む): 56327394816

約数和(自身を除く): 35195493376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 512, 520, 620, 640, 806, 832, 992, 1040, 1240, 1280, 1612, 1664, 1984, 2015, 2080, 2480, 2560, 3224, 3328, 3968, 4030, 4160, 4960, 6448, 6656, 7936, 8060, 8320, 9920, 12896, 15872, 16120, 16640, 19840, 20483, 25792, 32240, 33280, 39680, 40966, 51584, 64480, 79360, 81932, 102415, 103168, 128960, 163864, 204830, 206336, 257920, 266279, 327728, 409660, 515840, 532558, 634973, 655456, 819320, 1031680, 1065116, 1269946, 1310912, 1331395, 1638640, 2130232, 2539892, 2621824, 2662790, 3174865, 3277280, 4260464, 5079784, 5243648, 5325580, 6349730, 6554560, 8254649, 8520928, 10159568, 10487296, 10651160, 12699460, 13109120, 16509298, 17041856, 20319136, 21302320, 25398920, 26218240, 33018596, 34083712, 40638272, 41273245, 42604640, 50797840, 52436480, 66037192, 68167424, 81276544, 82546490, 85209280, 101595680, 132074384, 136334848, 162553088, 165092980, 170418560, 203191360, 264148768, 325106176, 330185960, 340837120, 406382720, 528297536, 660371920, 681674240, 812765440, 1056595072, 1320743840, 1625530880, 2113190144, 2641487680, 4226380288, 5282975360, 10565950720, 21131901440]

約数ペア:

[(1, 21131901440), (2, 10565950720), (4, 5282975360), (5, 4226380288), (8, 2641487680), (10, 2113190144), (13, 1625530880), (16, 1320743840), (20, 1056595072), (26, 812765440), (31, 681674240), (32, 660371920), (40, 528297536), (52, 406382720), (62, 340837120), (64, 330185960), (65, 325106176), (80, 264148768), (104, 203191360), (124, 170418560), (128, 165092980), (130, 162553088), (155, 136334848), (160, 132074384), (208, 101595680), (248, 85209280), (256, 82546490), (260, 81276544), (310, 68167424), (320, 66037192), (403, 52436480), (416, 50797840), (496, 42604640), (512, 41273245), (520, 40638272), (620, 34083712), (640, 33018596), (806, 26218240), (832, 25398920), (992, 21302320), (1040, 20319136), (1240, 17041856), (1280, 16509298), (1612, 13109120), (1664, 12699460), (1984, 10651160), (2015, 10487296), (2080, 10159568), (2480, 8520928), (2560, 8254649), (3224, 6554560), (3328, 6349730), (3968, 5325580), (4030, 5243648), (4160, 5079784), (4960, 4260464), (6448, 3277280), (6656, 3174865), (7936, 2662790), (8060, 2621824), (8320, 2539892), (9920, 2130232), (12896, 1638640), (15872, 1331395), (16120, 1310912), (16640, 1269946), (19840, 1065116), (20483, 1031680), (25792, 819320), (32240, 655456), (33280, 634973), (39680, 532558), (40966, 515840), (51584, 409660), (64480, 327728), (79360, 266279), (81932, 257920), (102415, 206336), (103168, 204830), (128960, 163864)]