21876680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 38948920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 43, 46, 56, 70, 79, 86, 92, 115, 140, 158, 161, 172, 184, 215, 230, 280, 301, 316, 322, 344, 395, 430, 460, 553, 602, 632, 644, 790, 805, 860, 920, 989, 1106, 1204, 1288, 1505, 1580, 1610, 1720, 1817, 1978, 2212, 2408, 2765, 3010, 3160, 3220, 3397, 3634, 3956, 4424, 4945, 5530, 6020, 6440, 6794, 6923, 7268, 7912, 9085, 9890, 11060, 12040, 12719, 13588, 13846, 14536, 16985, 18170, 19780, 22120, 23779, 25438, 27176, 27692, 33970, 34615, 36340, 39560, 47558, 50876, 55384, 63595, 67940, 69230, 72680, 78131, 95116, 101752, 118895, 127190, 135880, 138460, 156262, 190232, 237790, 254380, 276920, 312524, 390655, 475580, 508760, 546917, 625048, 781310, 951160, 1093834, 1562620, 2187668, 2734585, 3125240, 4375336, 5469170, 10938340, 21876680]

約数ペア:

[(1, 21876680), (2, 10938340), (4, 5469170), (5, 4375336), (7, 3125240), (8, 2734585), (10, 2187668), (14, 1562620), (20, 1093834), (23, 951160), (28, 781310), (35, 625048), (40, 546917), (43, 508760), (46, 475580), (56, 390655), (70, 312524), (79, 276920), (86, 254380), (92, 237790), (115, 190232), (140, 156262), (158, 138460), (161, 135880), (172, 127190), (184, 118895), (215, 101752), (230, 95116), (280, 78131), (301, 72680), (316, 69230), (322, 67940), (344, 63595), (395, 55384), (430, 50876), (460, 47558), (553, 39560), (602, 36340), (632, 34615), (644, 33970), (790, 27692), (805, 27176), (860, 25438), (920, 23779), (989, 22120), (1106, 19780), (1204, 18170), (1288, 16985), (1505, 14536), (1580, 13846), (1610, 13588), (1720, 12719), (1817, 12040), (1978, 11060), (2212, 9890), (2408, 9085), (2765, 7912), (3010, 7268), (3160, 6923), (3220, 6794), (3397, 6440), (3634, 6020), (3956, 5530), (4424, 4945)]