81906530

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 162846720

約数和(自身を除く): 80940190

約数列:

[1, 2, 5, 10, 19, 37, 38, 61, 74, 95, 122, 185, 190, 191, 305, 370, 382, 610, 703, 955, 1159, 1406, 1910, 2257, 2318, 3515, 3629, 4514, 5795, 7030, 7067, 7258, 11285, 11590, 11651, 14134, 18145, 22570, 23302, 35335, 36290, 42883, 58255, 70670, 85766, 116510, 134273, 214415, 221369, 268546, 428830, 431087, 442738, 671365, 862174, 1106845, 1342730, 2155435, 2213690, 4310870, 8190653, 16381306, 40953265, 81906530]

約数ペア:

[(1, 81906530), (2, 40953265), (5, 16381306), (10, 8190653), (19, 4310870), (37, 2213690), (38, 2155435), (61, 1342730), (74, 1106845), (95, 862174), (122, 671365), (185, 442738), (190, 431087), (191, 428830), (305, 268546), (370, 221369), (382, 214415), (610, 134273), (703, 116510), (955, 85766), (1159, 70670), (1406, 58255), (1910, 42883), (2257, 36290), (2318, 35335), (3515, 23302), (3629, 22570), (4514, 18145), (5795, 14134), (7030, 11651), (7067, 11590), (7258, 11285)]