21146720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 36914080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 79, 80, 112, 140, 158, 160, 224, 239, 280, 316, 395, 478, 553, 560, 632, 790, 956, 1106, 1120, 1195, 1264, 1580, 1673, 1912, 2212, 2390, 2528, 2765, 3160, 3346, 3824, 4424, 4780, 5530, 6320, 6692, 7648, 8365, 8848, 9560, 11060, 12640, 13384, 16730, 17696, 18881, 19120, 22120, 26768, 33460, 37762, 38240, 44240, 53536, 66920, 75524, 88480, 94405, 132167, 133840, 151048, 188810, 264334, 267680, 302096, 377620, 528668, 604192, 660835, 755240, 1057336, 1321670, 1510480, 2114672, 2643340, 3020960, 4229344, 5286680, 10573360, 21146720]

約数ペア:

[(1, 21146720), (2, 10573360), (4, 5286680), (5, 4229344), (7, 3020960), (8, 2643340), (10, 2114672), (14, 1510480), (16, 1321670), (20, 1057336), (28, 755240), (32, 660835), (35, 604192), (40, 528668), (56, 377620), (70, 302096), (79, 267680), (80, 264334), (112, 188810), (140, 151048), (158, 133840), (160, 132167), (224, 94405), (239, 88480), (280, 75524), (316, 66920), (395, 53536), (478, 44240), (553, 38240), (560, 37762), (632, 33460), (790, 26768), (956, 22120), (1106, 19120), (1120, 18881), (1195, 17696), (1264, 16730), (1580, 13384), (1673, 12640), (1912, 11060), (2212, 9560), (2390, 8848), (2528, 8365), (2765, 7648), (3160, 6692), (3346, 6320), (3824, 5530), (4424, 4780)]