210999880

素因数分解:

$2^3\times 5^1\times 7^4\times {\mathrm{13}}^3$

素因数の和:78

約数の個数: 160

約数和(自身を含む): 599974200

約数和(自身を除く): 388974320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 140, 169, 182, 196, 245, 260, 280, 338, 343, 364, 392, 455, 490, 520, 637, 676, 686, 728, 845, 910, 980, 1183, 1274, 1352, 1372, 1690, 1715, 1820, 1960, 2197, 2366, 2401, 2548, 2744, 3185, 3380, 3430, 3640, 4394, 4459, 4732, 4802, 5096, 5915, 6370, 6760, 6860, 8281, 8788, 8918, 9464, 9604, 10985, 11830, 12005, 12740, 13720, 15379, 16562, 17576, 17836, 19208, 21970, 22295, 23660, 24010, 25480, 30758, 31213, 33124, 35672, 41405, 43940, 44590, 47320, 48020, 57967, 61516, 62426, 66248, 76895, 82810, 87880, 89180, 96040, 107653, 115934, 123032, 124852, 153790, 156065, 165620, 178360, 215306, 231868, 249704, 289835, 307580, 312130, 331240, 405769, 430612, 463736, 538265, 579670, 615160, 624260, 753571, 811538, 861224, 1076530, 1159340, 1248520, 1507142, 1623076, 2028845, 2153060, 2318680, 3014284, 3246152, 3767855, 4057690, 4306120, 5274997, 6028568, 7535710, 8115380, 10549994, 15071420, 16230760, 21099988, 26374985, 30142840, 42199976, 52749970, 105499940, 210999880]

約数ペア:

[(1, 210999880), (2, 105499940), (4, 52749970), (5, 42199976), (7, 30142840), (8, 26374985), (10, 21099988), (13, 16230760), (14, 15071420), (20, 10549994), (26, 8115380), (28, 7535710), (35, 6028568), (40, 5274997), (49, 4306120), (52, 4057690), (56, 3767855), (65, 3246152), (70, 3014284), (91, 2318680), (98, 2153060), (104, 2028845), (130, 1623076), (140, 1507142), (169, 1248520), (182, 1159340), (196, 1076530), (245, 861224), (260, 811538), (280, 753571), (338, 624260), (343, 615160), (364, 579670), (392, 538265), (455, 463736), (490, 430612), (520, 405769), (637, 331240), (676, 312130), (686, 307580), (728, 289835), (845, 249704), (910, 231868), (980, 215306), (1183, 178360), (1274, 165620), (1352, 156065), (1372, 153790), (1690, 124852), (1715, 123032), (1820, 115934), (1960, 107653), (2197, 96040), (2366, 89180), (2401, 87880), (2548, 82810), (2744, 76895), (3185, 66248), (3380, 62426), (3430, 61516), (3640, 57967), (4394, 48020), (4459, 47320), (4732, 44590), (4802, 43940), (5096, 41405), (5915, 35672), (6370, 33124), (6760, 31213), (6860, 30758), (8281, 25480), (8788, 24010), (8918, 23660), (9464, 22295), (9604, 21970), (10985, 19208), (11830, 17836), (12005, 17576), (12740, 16562), (13720, 15379)]