21601784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24363016

約数列:

[1, 2, 4, 8, 19, 23, 37, 38, 46, 74, 76, 92, 148, 152, 167, 184, 296, 334, 437, 668, 703, 851, 874, 1336, 1406, 1702, 1748, 2812, 3173, 3404, 3496, 3841, 5624, 6179, 6346, 6808, 7682, 12358, 12692, 15364, 16169, 24716, 25384, 30728, 32338, 49432, 64676, 72979, 117401, 129352, 142117, 145958, 234802, 284234, 291916, 469604, 568468, 583832, 939208, 1136936, 2700223, 5400446, 10800892, 21601784]

約数ペア:

[(1, 21601784), (2, 10800892), (4, 5400446), (8, 2700223), (19, 1136936), (23, 939208), (37, 583832), (38, 568468), (46, 469604), (74, 291916), (76, 284234), (92, 234802), (148, 145958), (152, 142117), (167, 129352), (184, 117401), (296, 72979), (334, 64676), (437, 49432), (668, 32338), (703, 30728), (851, 25384), (874, 24716), (1336, 16169), (1406, 15364), (1702, 12692), (1748, 12358), (2812, 7682), (3173, 6808), (3404, 6346), (3496, 6179), (3841, 5624)]