16000400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:229

約数の個数: 120

約数和(自身を含む): 44075304

約数和(自身を除く): 28074904

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 80, 85, 100, 104, 130, 136, 170, 181, 200, 208, 221, 260, 272, 325, 340, 362, 400, 425, 442, 520, 650, 680, 724, 850, 884, 905, 1040, 1105, 1300, 1360, 1448, 1700, 1768, 1810, 2210, 2353, 2600, 2896, 3077, 3400, 3536, 3620, 4420, 4525, 4706, 5200, 5525, 6154, 6800, 7240, 8840, 9050, 9412, 11050, 11765, 12308, 14480, 15385, 17680, 18100, 18824, 22100, 23530, 24616, 30770, 36200, 37648, 40001, 44200, 47060, 49232, 58825, 61540, 72400, 76925, 80002, 88400, 94120, 117650, 123080, 153850, 160004, 188240, 200005, 235300, 246160, 307700, 320008, 400010, 470600, 615400, 640016, 800020, 941200, 1000025, 1230800, 1600040, 2000050, 3200080, 4000100, 8000200, 16000400]

約数ペア:

[(1, 16000400), (2, 8000200), (4, 4000100), (5, 3200080), (8, 2000050), (10, 1600040), (13, 1230800), (16, 1000025), (17, 941200), (20, 800020), (25, 640016), (26, 615400), (34, 470600), (40, 400010), (50, 320008), (52, 307700), (65, 246160), (68, 235300), (80, 200005), (85, 188240), (100, 160004), (104, 153850), (130, 123080), (136, 117650), (170, 94120), (181, 88400), (200, 80002), (208, 76925), (221, 72400), (260, 61540), (272, 58825), (325, 49232), (340, 47060), (362, 44200), (400, 40001), (425, 37648), (442, 36200), (520, 30770), (650, 24616), (680, 23530), (724, 22100), (850, 18824), (884, 18100), (905, 17680), (1040, 15385), (1105, 14480), (1300, 12308), (1360, 11765), (1448, 11050), (1700, 9412), (1768, 9050), (1810, 8840), (2210, 7240), (2353, 6800), (2600, 6154), (2896, 5525), (3077, 5200), (3400, 4706), (3536, 4525), (3620, 4420)]