81997110

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{599}}^1$

素因数の和:644

約数の個数: 120

約数和(自身を含む): 239144400

約数和(自身を除く): 157147290

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 169, 195, 234, 270, 338, 351, 390, 405, 507, 585, 599, 702, 810, 845, 1014, 1053, 1170, 1198, 1521, 1690, 1755, 1797, 2106, 2535, 2995, 3042, 3510, 3594, 4563, 5070, 5265, 5391, 5990, 7605, 7787, 8985, 9126, 10530, 10782, 13689, 15210, 15574, 16173, 17970, 22815, 23361, 26955, 27378, 32346, 38935, 45630, 46722, 48519, 53910, 68445, 70083, 77870, 80865, 97038, 101231, 116805, 136890, 140166, 161730, 202462, 210249, 233610, 242595, 303693, 350415, 420498, 485190, 506155, 607386, 630747, 700830, 911079, 1012310, 1051245, 1261494, 1518465, 1822158, 2102490, 2733237, 3036930, 3153735, 4555395, 5466474, 6307470, 8199711, 9110790, 13666185, 16399422, 27332370, 40998555, 81997110]

約数ペア:

[(1, 81997110), (2, 40998555), (3, 27332370), (5, 16399422), (6, 13666185), (9, 9110790), (10, 8199711), (13, 6307470), (15, 5466474), (18, 4555395), (26, 3153735), (27, 3036930), (30, 2733237), (39, 2102490), (45, 1822158), (54, 1518465), (65, 1261494), (78, 1051245), (81, 1012310), (90, 911079), (117, 700830), (130, 630747), (135, 607386), (162, 506155), (169, 485190), (195, 420498), (234, 350415), (270, 303693), (338, 242595), (351, 233610), (390, 210249), (405, 202462), (507, 161730), (585, 140166), (599, 136890), (702, 116805), (810, 101231), (845, 97038), (1014, 80865), (1053, 77870), (1170, 70083), (1198, 68445), (1521, 53910), (1690, 48519), (1755, 46722), (1797, 45630), (2106, 38935), (2535, 32346), (2995, 27378), (3042, 26955), (3510, 23361), (3594, 22815), (4563, 17970), (5070, 16173), (5265, 15574), (5391, 15210), (5990, 13689), (7605, 10782), (7787, 10530), (8985, 9126)]