80521220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5077}}^1$

素因数の和:5160

約数の個数: 48

約数和(自身を含む): 185123568

約数和(自身を除く): 104602348

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 5077, 7930, 10154, 15860, 20308, 25385, 50770, 66001, 101540, 132002, 264004, 309697, 330005, 619394, 660010, 1238788, 1320020, 1548485, 3096970, 4026061, 6193940, 8052122, 16104244, 20130305, 40260610, 80521220]

約数ペア:

[(1, 80521220), (2, 40260610), (4, 20130305), (5, 16104244), (10, 8052122), (13, 6193940), (20, 4026061), (26, 3096970), (52, 1548485), (61, 1320020), (65, 1238788), (122, 660010), (130, 619394), (244, 330005), (260, 309697), (305, 264004), (610, 132002), (793, 101540), (1220, 66001), (1586, 50770), (3172, 25385), (3965, 20308), (5077, 15860), (7930, 10154)]