20636809120

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{181}}^2$

素因数の和:535

約数の個数: 144

約数和(自身を含む): 51005251584

約数和(自身を除く): 30368442464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 127, 155, 160, 181, 248, 254, 310, 362, 496, 508, 620, 635, 724, 905, 992, 1016, 1240, 1270, 1448, 1810, 2032, 2480, 2540, 2896, 3620, 3937, 4064, 4960, 5080, 5611, 5792, 7240, 7874, 10160, 11222, 14480, 15748, 19685, 20320, 22444, 22987, 28055, 28960, 31496, 32761, 39370, 44888, 45974, 56110, 62992, 65522, 78740, 89776, 91948, 112220, 114935, 125984, 131044, 157480, 163805, 179552, 183896, 224440, 229870, 262088, 314960, 327610, 367792, 448880, 459740, 524176, 629920, 655220, 712597, 735584, 897760, 919480, 1015591, 1048352, 1310440, 1425194, 1838960, 2031182, 2620880, 2850388, 3562985, 3677920, 4062364, 4160647, 5077955, 5241760, 5700776, 7125970, 8124728, 8321294, 10155910, 11401552, 14251940, 16249456, 16642588, 20311820, 20803235, 22803104, 28503880, 32498912, 33285176, 40623640, 41606470, 57007760, 66570352, 81247280, 83212940, 114015520, 128980057, 133140704, 162494560, 166425880, 257960114, 332851760, 515920228, 644900285, 665703520, 1031840456, 1289800570, 2063680912, 2579601140, 4127361824, 5159202280, 10318404560, 20636809120]

約数ペア:

[(1, 20636809120), (2, 10318404560), (4, 5159202280), (5, 4127361824), (8, 2579601140), (10, 2063680912), (16, 1289800570), (20, 1031840456), (31, 665703520), (32, 644900285), (40, 515920228), (62, 332851760), (80, 257960114), (124, 166425880), (127, 162494560), (155, 133140704), (160, 128980057), (181, 114015520), (248, 83212940), (254, 81247280), (310, 66570352), (362, 57007760), (496, 41606470), (508, 40623640), (620, 33285176), (635, 32498912), (724, 28503880), (905, 22803104), (992, 20803235), (1016, 20311820), (1240, 16642588), (1270, 16249456), (1448, 14251940), (1810, 11401552), (2032, 10155910), (2480, 8321294), (2540, 8124728), (2896, 7125970), (3620, 5700776), (3937, 5241760), (4064, 5077955), (4960, 4160647), (5080, 4062364), (5611, 3677920), (5792, 3562985), (7240, 2850388), (7874, 2620880), (10160, 2031182), (11222, 1838960), (14480, 1425194), (15748, 1310440), (19685, 1048352), (20320, 1015591), (22444, 919480), (22987, 897760), (28055, 735584), (28960, 712597), (31496, 655220), (32761, 629920), (39370, 524176), (44888, 459740), (45974, 448880), (56110, 367792), (62992, 327610), (65522, 314960), (78740, 262088), (89776, 229870), (91948, 224440), (112220, 183896), (114935, 179552), (125984, 163805), (131044, 157480)]