81219628

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{683}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 169150464

約数和(自身を除く): 87930836

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 137, 217, 274, 434, 548, 683, 868, 959, 1366, 1918, 2732, 3836, 4247, 4781, 8494, 9562, 16988, 19124, 21173, 29729, 42346, 59458, 84692, 93571, 118916, 148211, 187142, 296422, 374284, 592844, 654997, 1309994, 2619988, 2900701, 5801402, 11602804, 20304907, 40609814, 81219628]

約数ペア:

[(1, 81219628), (2, 40609814), (4, 20304907), (7, 11602804), (14, 5801402), (28, 2900701), (31, 2619988), (62, 1309994), (124, 654997), (137, 592844), (217, 374284), (274, 296422), (434, 187142), (548, 148211), (683, 118916), (868, 93571), (959, 84692), (1366, 59458), (1918, 42346), (2732, 29729), (3836, 21173), (4247, 19124), (4781, 16988), (8494, 9562)]