20854549910

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{21031}}^1$

素因数の和:21381

約数の個数: 64

約数和(自身を含む): 41976506880

約数和(自身を除く): 21121956970

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 307, 323, 614, 646, 1535, 1615, 3070, 3230, 5219, 5833, 10438, 11666, 21031, 26095, 29165, 42062, 52190, 58330, 99161, 105155, 198322, 210310, 357527, 399589, 495805, 715054, 799178, 991610, 1787635, 1997945, 3575270, 3995890, 6456517, 6793013, 12913034, 13586026, 32282585, 33965065, 64565170, 67930130, 109760789, 122673823, 219521578, 245347646, 548803945, 613369115, 1097607890, 1226738230, 2085454991, 4170909982, 10427274955, 20854549910]

約数ペア:

[(1, 20854549910), (2, 10427274955), (5, 4170909982), (10, 2085454991), (17, 1226738230), (19, 1097607890), (34, 613369115), (38, 548803945), (85, 245347646), (95, 219521578), (170, 122673823), (190, 109760789), (307, 67930130), (323, 64565170), (614, 33965065), (646, 32282585), (1535, 13586026), (1615, 12913034), (3070, 6793013), (3230, 6456517), (5219, 3995890), (5833, 3575270), (10438, 1997945), (11666, 1787635), (21031, 991610), (26095, 799178), (29165, 715054), (42062, 495805), (52190, 399589), (58330, 357527), (99161, 210310), (105155, 198322)]