4000100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 9952488

約数和(自身を除く): 5952388

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 181, 221, 260, 325, 340, 362, 425, 442, 650, 724, 850, 884, 905, 1105, 1300, 1700, 1810, 2210, 2353, 3077, 3620, 4420, 4525, 4706, 5525, 6154, 9050, 9412, 11050, 11765, 12308, 15385, 18100, 22100, 23530, 30770, 40001, 47060, 58825, 61540, 76925, 80002, 117650, 153850, 160004, 200005, 235300, 307700, 400010, 800020, 1000025, 2000050, 4000100]

約数ペア:

[(1, 4000100), (2, 2000050), (4, 1000025), (5, 800020), (10, 400010), (13, 307700), (17, 235300), (20, 200005), (25, 160004), (26, 153850), (34, 117650), (50, 80002), (52, 76925), (65, 61540), (68, 58825), (85, 47060), (100, 40001), (130, 30770), (170, 23530), (181, 22100), (221, 18100), (260, 15385), (325, 12308), (340, 11765), (362, 11050), (425, 9412), (442, 9050), (650, 6154), (724, 5525), (850, 4706), (884, 4525), (905, 4420), (1105, 3620), (1300, 3077), (1700, 2353), (1810, 2210)]