204428640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^2$

素因数の和:393

約数の個数: 144

約数和(自身を含む): 697337424

約数和(自身を除く): 492908784

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 181, 195, 208, 240, 260, 312, 362, 390, 416, 480, 520, 543, 624, 724, 780, 905, 1040, 1086, 1248, 1448, 1560, 1810, 2080, 2172, 2353, 2715, 2896, 3120, 3620, 4344, 4706, 5430, 5792, 6240, 7059, 7240, 8688, 9412, 10860, 11765, 14118, 14480, 17376, 18824, 21720, 23530, 28236, 28960, 32761, 35295, 37648, 43440, 47060, 56472, 65522, 70590, 75296, 86880, 94120, 98283, 112944, 131044, 141180, 163805, 188240, 196566, 225888, 262088, 282360, 327610, 376480, 393132, 425893, 491415, 524176, 564720, 655220, 786264, 851786, 982830, 1048352, 1129440, 1277679, 1310440, 1572528, 1703572, 1965660, 2129465, 2555358, 2620880, 3145056, 3407144, 3931320, 4258930, 5110716, 5241760, 6388395, 6814288, 7862640, 8517860, 10221432, 12776790, 13628576, 15725280, 17035720, 20442864, 25553580, 34071440, 40885728, 51107160, 68142880, 102214320, 204428640]

約数ペア:

[(1, 204428640), (2, 102214320), (3, 68142880), (4, 51107160), (5, 40885728), (6, 34071440), (8, 25553580), (10, 20442864), (12, 17035720), (13, 15725280), (15, 13628576), (16, 12776790), (20, 10221432), (24, 8517860), (26, 7862640), (30, 6814288), (32, 6388395), (39, 5241760), (40, 5110716), (48, 4258930), (52, 3931320), (60, 3407144), (65, 3145056), (78, 2620880), (80, 2555358), (96, 2129465), (104, 1965660), (120, 1703572), (130, 1572528), (156, 1310440), (160, 1277679), (181, 1129440), (195, 1048352), (208, 982830), (240, 851786), (260, 786264), (312, 655220), (362, 564720), (390, 524176), (416, 491415), (480, 425893), (520, 393132), (543, 376480), (624, 327610), (724, 282360), (780, 262088), (905, 225888), (1040, 196566), (1086, 188240), (1248, 163805), (1448, 141180), (1560, 131044), (1810, 112944), (2080, 98283), (2172, 94120), (2353, 86880), (2715, 75296), (2896, 70590), (3120, 65522), (3620, 56472), (4344, 47060), (4706, 43440), (5430, 37648), (5792, 35295), (6240, 32761), (7059, 28960), (7240, 28236), (8688, 23530), (9412, 21720), (10860, 18824), (11765, 17376), (14118, 14480)]