28128880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:123

約数の個数: 160

約数和(自身を含む): 78369984

約数和(自身を除く): 50241104

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 37, 40, 43, 52, 65, 68, 74, 80, 85, 86, 104, 130, 136, 148, 170, 172, 185, 208, 215, 221, 260, 272, 296, 340, 344, 370, 430, 442, 481, 520, 559, 592, 629, 680, 688, 731, 740, 860, 884, 962, 1040, 1105, 1118, 1258, 1360, 1462, 1480, 1591, 1720, 1768, 1924, 2210, 2236, 2405, 2516, 2795, 2924, 2960, 3145, 3182, 3440, 3536, 3655, 3848, 4420, 4472, 4810, 5032, 5590, 5848, 6290, 6364, 7310, 7696, 7955, 8177, 8840, 8944, 9503, 9620, 10064, 11180, 11696, 12580, 12728, 14620, 15910, 16354, 17680, 19006, 19240, 20683, 22360, 25160, 25456, 27047, 29240, 31820, 32708, 38012, 38480, 40885, 41366, 44720, 47515, 50320, 54094, 58480, 63640, 65416, 76024, 81770, 82732, 95030, 103415, 108188, 127280, 130832, 135235, 152048, 163540, 165464, 190060, 206830, 216376, 270470, 327080, 330928, 351611, 380120, 413660, 432752, 540940, 654160, 703222, 760240, 827320, 1081880, 1406444, 1654640, 1758055, 2163760, 2812888, 3516110, 5625776, 7032220, 14064440, 28128880]

約数ペア:

[(1, 28128880), (2, 14064440), (4, 7032220), (5, 5625776), (8, 3516110), (10, 2812888), (13, 2163760), (16, 1758055), (17, 1654640), (20, 1406444), (26, 1081880), (34, 827320), (37, 760240), (40, 703222), (43, 654160), (52, 540940), (65, 432752), (68, 413660), (74, 380120), (80, 351611), (85, 330928), (86, 327080), (104, 270470), (130, 216376), (136, 206830), (148, 190060), (170, 165464), (172, 163540), (185, 152048), (208, 135235), (215, 130832), (221, 127280), (260, 108188), (272, 103415), (296, 95030), (340, 82732), (344, 81770), (370, 76024), (430, 65416), (442, 63640), (481, 58480), (520, 54094), (559, 50320), (592, 47515), (629, 44720), (680, 41366), (688, 40885), (731, 38480), (740, 38012), (860, 32708), (884, 31820), (962, 29240), (1040, 27047), (1105, 25456), (1118, 25160), (1258, 22360), (1360, 20683), (1462, 19240), (1480, 19006), (1591, 17680), (1720, 16354), (1768, 15910), (1924, 14620), (2210, 12728), (2236, 12580), (2405, 11696), (2516, 11180), (2795, 10064), (2924, 9620), (2960, 9503), (3145, 8944), (3182, 8840), (3440, 8177), (3536, 7955), (3655, 7696), (3848, 7310), (4420, 6364), (4472, 6290), (4810, 5848), (5032, 5590)]