21115691540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{148723}}^1$

素因数の和:148992

約数の個数: 48

約数和(自身を含む): 45973562880

約数和(自身を除く): 24857871340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 229, 310, 458, 620, 916, 1145, 2290, 4580, 7099, 14198, 28396, 35495, 70990, 141980, 148723, 297446, 594892, 743615, 1487230, 2974460, 4610413, 9220826, 18441652, 23052065, 34057567, 46104130, 68115134, 92208260, 136230268, 170287835, 340575670, 681151340, 1055784577, 2111569154, 4223138308, 5278922885, 10557845770, 21115691540]

約数ペア:

[(1, 21115691540), (2, 10557845770), (4, 5278922885), (5, 4223138308), (10, 2111569154), (20, 1055784577), (31, 681151340), (62, 340575670), (124, 170287835), (155, 136230268), (229, 92208260), (310, 68115134), (458, 46104130), (620, 34057567), (916, 23052065), (1145, 18441652), (2290, 9220826), (4580, 4610413), (7099, 2974460), (14198, 1487230), (28396, 743615), (35495, 594892), (70990, 297446), (141980, 148723)]