400304240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23059}}^1$

素因数の和:23110

約数の個数: 80

約数和(自身を含む): 1098024960

約数和(自身を除く): 697720720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 8680, 17360, 23059, 46118, 92236, 115295, 161413, 184472, 230590, 322826, 368944, 461180, 645652, 714829, 807065, 922360, 1291304, 1429658, 1614130, 1844720, 2582608, 2859316, 3228260, 3574145, 5003803, 5718632, 6456520, 7148290, 10007606, 11437264, 12913040, 14296580, 20015212, 25019015, 28593160, 40030424, 50038030, 57186320, 80060848, 100076060, 200152120, 400304240]

約数ペア:

[(1, 400304240), (2, 200152120), (4, 100076060), (5, 80060848), (7, 57186320), (8, 50038030), (10, 40030424), (14, 28593160), (16, 25019015), (20, 20015212), (28, 14296580), (31, 12913040), (35, 11437264), (40, 10007606), (56, 7148290), (62, 6456520), (70, 5718632), (80, 5003803), (112, 3574145), (124, 3228260), (140, 2859316), (155, 2582608), (217, 1844720), (248, 1614130), (280, 1429658), (310, 1291304), (434, 922360), (496, 807065), (560, 714829), (620, 645652), (868, 461180), (1085, 368944), (1240, 322826), (1736, 230590), (2170, 184472), (2480, 161413), (3472, 115295), (4340, 92236), (8680, 46118), (17360, 23059)]