1987475620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{7591}}^1$

素因数の和:7685

約数の個数: 96

約数和(自身を含む): 4821223680

約数和(自身を除く): 2833748060

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 53, 65, 76, 95, 106, 130, 190, 212, 247, 260, 265, 380, 494, 530, 689, 988, 1007, 1060, 1235, 1378, 2014, 2470, 2756, 3445, 4028, 4940, 5035, 6890, 7591, 10070, 13091, 13780, 15182, 20140, 26182, 30364, 37955, 52364, 65455, 75910, 98683, 130910, 144229, 151820, 197366, 261820, 288458, 394732, 402323, 493415, 576916, 721145, 804646, 986830, 1442290, 1609292, 1874977, 1973660, 2011615, 2884580, 3749954, 4023230, 5230199, 7499908, 7644137, 8046460, 9374885, 10460398, 15288274, 18749770, 20920796, 26150995, 30576548, 37499540, 38220685, 52301990, 76441370, 99373781, 104603980, 152882740, 198747562, 397495124, 496868905, 993737810, 1987475620]

約数ペア:

[(1, 1987475620), (2, 993737810), (4, 496868905), (5, 397495124), (10, 198747562), (13, 152882740), (19, 104603980), (20, 99373781), (26, 76441370), (38, 52301990), (52, 38220685), (53, 37499540), (65, 30576548), (76, 26150995), (95, 20920796), (106, 18749770), (130, 15288274), (190, 10460398), (212, 9374885), (247, 8046460), (260, 7644137), (265, 7499908), (380, 5230199), (494, 4023230), (530, 3749954), (689, 2884580), (988, 2011615), (1007, 1973660), (1060, 1874977), (1235, 1609292), (1378, 1442290), (2014, 986830), (2470, 804646), (2756, 721145), (3445, 576916), (4028, 493415), (4940, 402323), (5035, 394732), (6890, 288458), (7591, 261820), (10070, 197366), (13091, 151820), (13780, 144229), (15182, 130910), (20140, 98683), (26182, 75910), (30364, 65455), (37955, 52364)]