82921280

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:704

約数の個数: 112

約数和(自身を含む): 219846144

約数和(自身を除く): 136924864

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 643, 806, 832, 992, 1040, 1240, 1286, 1612, 1984, 2015, 2080, 2480, 2572, 3215, 3224, 4030, 4160, 4960, 5144, 6430, 6448, 8060, 8359, 9920, 10288, 12860, 12896, 16120, 16718, 19933, 20576, 25720, 25792, 32240, 33436, 39866, 41152, 41795, 51440, 64480, 66872, 79732, 83590, 99665, 102880, 128960, 133744, 159464, 167180, 199330, 205760, 259129, 267488, 318928, 334360, 398660, 518258, 534976, 637856, 668720, 797320, 1036516, 1275712, 1295645, 1337440, 1594640, 2073032, 2591290, 2674880, 3189280, 4146064, 5182580, 6378560, 8292128, 10365160, 16584256, 20730320, 41460640, 82921280]

約数ペア:

[(1, 82921280), (2, 41460640), (4, 20730320), (5, 16584256), (8, 10365160), (10, 8292128), (13, 6378560), (16, 5182580), (20, 4146064), (26, 3189280), (31, 2674880), (32, 2591290), (40, 2073032), (52, 1594640), (62, 1337440), (64, 1295645), (65, 1275712), (80, 1036516), (104, 797320), (124, 668720), (130, 637856), (155, 534976), (160, 518258), (208, 398660), (248, 334360), (260, 318928), (310, 267488), (320, 259129), (403, 205760), (416, 199330), (496, 167180), (520, 159464), (620, 133744), (643, 128960), (806, 102880), (832, 99665), (992, 83590), (1040, 79732), (1240, 66872), (1286, 64480), (1612, 51440), (1984, 41795), (2015, 41152), (2080, 39866), (2480, 33436), (2572, 32240), (3215, 25792), (3224, 25720), (4030, 20576), (4160, 19933), (4960, 16718), (5144, 16120), (6430, 12896), (6448, 12860), (8060, 10288), (8359, 9920)]