21506768

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2137}}^1$

素因数の和:2199

約数の個数: 40

約数和(自身を含む): 45334152

約数和(自身を除く): 23827384

約数列:

[1, 2, 4, 8, 16, 17, 34, 37, 68, 74, 136, 148, 272, 296, 592, 629, 1258, 2137, 2516, 4274, 5032, 8548, 10064, 17096, 34192, 36329, 72658, 79069, 145316, 158138, 290632, 316276, 581264, 632552, 1265104, 1344173, 2688346, 5376692, 10753384, 21506768]

約数ペア:

[(1, 21506768), (2, 10753384), (4, 5376692), (8, 2688346), (16, 1344173), (17, 1265104), (34, 632552), (37, 581264), (68, 316276), (74, 290632), (136, 158138), (148, 145316), (272, 79069), (296, 72658), (592, 36329), (629, 34192), (1258, 17096), (2137, 10064), (2516, 8548), (4274, 5032)]