400512560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23071}}^1$

素因数の和:23122

約数の個数: 80

約数和(自身を含む): 1098596352

約数和(自身を除く): 698083792

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, 23071, 46142, 92284, 115355, 161497, 184568, 230710, 322994, 369136, 461420, 645988, 715201, 807485, 922840, 1291976, 1430402, 1614970, 1845680, 2583952, 2860804, 3229940, 3576005, 5006407, 5721608, 6459880, 7152010, 10012814, 11443216, 12919760, 14304020, 20025628, 25032035, 28608040, 40051256, 50064070, 57216080, 80102512, 100128140, 200256280, 400512560]

約数ペア:

[(1, 400512560), (2, 200256280), (4, 100128140), (5, 80102512), (7, 57216080), (8, 50064070), (10, 40051256), (14, 28608040), (16, 25032035), (20, 20025628), (28, 14304020), (31, 12919760), (35, 11443216), (40, 10012814), (56, 7152010), (62, 6459880), (70, 5721608), (80, 5006407), (112, 3576005), (124, 3229940), (140, 2860804), (155, 2583952), (217, 1845680), (248, 1614970), (280, 1430402), (310, 1291976), (434, 922840), (496, 807485), (560, 715201), (620, 645988), (868, 461420), (1085, 369136), (1240, 322994), (1736, 230710), (2170, 184568), (2480, 161497), (3472, 115355), (4340, 92284), (8680, 46142), (17360, 23071)]