28931240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:147

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 47273560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 41, 46, 52, 59, 65, 82, 92, 104, 115, 118, 130, 164, 184, 205, 230, 236, 260, 295, 299, 328, 410, 460, 472, 520, 533, 590, 598, 767, 820, 920, 943, 1066, 1180, 1196, 1357, 1495, 1534, 1640, 1886, 2132, 2360, 2392, 2419, 2665, 2714, 2990, 3068, 3772, 3835, 4264, 4715, 4838, 5330, 5428, 5980, 6136, 6785, 7544, 7670, 9430, 9676, 10660, 10856, 11960, 12095, 12259, 13570, 15340, 17641, 18860, 19352, 21320, 24190, 24518, 27140, 30680, 31447, 35282, 37720, 48380, 49036, 54280, 55637, 61295, 62894, 70564, 88205, 96760, 98072, 111274, 122590, 125788, 141128, 157235, 176410, 222548, 245180, 251576, 278185, 314470, 352820, 445096, 490360, 556370, 628940, 705640, 723281, 1112740, 1257880, 1446562, 2225480, 2893124, 3616405, 5786248, 7232810, 14465620, 28931240]

約数ペア:

[(1, 28931240), (2, 14465620), (4, 7232810), (5, 5786248), (8, 3616405), (10, 2893124), (13, 2225480), (20, 1446562), (23, 1257880), (26, 1112740), (40, 723281), (41, 705640), (46, 628940), (52, 556370), (59, 490360), (65, 445096), (82, 352820), (92, 314470), (104, 278185), (115, 251576), (118, 245180), (130, 222548), (164, 176410), (184, 157235), (205, 141128), (230, 125788), (236, 122590), (260, 111274), (295, 98072), (299, 96760), (328, 88205), (410, 70564), (460, 62894), (472, 61295), (520, 55637), (533, 54280), (590, 49036), (598, 48380), (767, 37720), (820, 35282), (920, 31447), (943, 30680), (1066, 27140), (1180, 24518), (1196, 24190), (1357, 21320), (1495, 19352), (1534, 18860), (1640, 17641), (1886, 15340), (2132, 13570), (2360, 12259), (2392, 12095), (2419, 11960), (2665, 10856), (2714, 10660), (2990, 9676), (3068, 9430), (3772, 7670), (3835, 7544), (4264, 6785), (4715, 6136), (4838, 5980), (5330, 5428)]