201721730

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{2557}}^1$

素因数の和:2608

約数の個数: 64

約数和(自身を含む): 442022400

約数和(自身を除く): 240300670

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 98, 115, 161, 230, 245, 322, 343, 490, 686, 805, 1127, 1610, 1715, 2254, 2557, 3430, 5114, 5635, 7889, 11270, 12785, 15778, 17899, 25570, 35798, 39445, 58811, 78890, 89495, 117622, 125293, 178990, 250586, 294055, 411677, 588110, 626465, 823354, 877051, 1252930, 1754102, 2058385, 2881739, 4116770, 4385255, 5763478, 8770510, 14408695, 20172173, 28817390, 40344346, 100860865, 201721730]

約数ペア:

[(1, 201721730), (2, 100860865), (5, 40344346), (7, 28817390), (10, 20172173), (14, 14408695), (23, 8770510), (35, 5763478), (46, 4385255), (49, 4116770), (70, 2881739), (98, 2058385), (115, 1754102), (161, 1252930), (230, 877051), (245, 823354), (322, 626465), (343, 588110), (490, 411677), (686, 294055), (805, 250586), (1127, 178990), (1610, 125293), (1715, 117622), (2254, 89495), (2557, 78890), (3430, 58811), (5114, 39445), (5635, 35798), (7889, 25570), (11270, 17899), (12785, 15778)]