20216979220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{165523}}^1$

素因数の和:165760

約数の個数: 48

約数和(自身を含む): 44047922688

約数和(自身を除く): 23830943468

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 197, 310, 394, 620, 788, 985, 1970, 3940, 6107, 12214, 24428, 30535, 61070, 122140, 165523, 331046, 662092, 827615, 1655230, 3310460, 5131213, 10262426, 20524852, 25656065, 32608031, 51312130, 65216062, 102624260, 130432124, 163040155, 326080310, 652160620, 1010848961, 2021697922, 4043395844, 5054244805, 10108489610, 20216979220]

約数ペア:

[(1, 20216979220), (2, 10108489610), (4, 5054244805), (5, 4043395844), (10, 2021697922), (20, 1010848961), (31, 652160620), (62, 326080310), (124, 163040155), (155, 130432124), (197, 102624260), (310, 65216062), (394, 51312130), (620, 32608031), (788, 25656065), (985, 20524852), (1970, 10262426), (3940, 5131213), (6107, 3310460), (12214, 1655230), (24428, 827615), (30535, 662092), (61070, 331046), (122140, 165523)]