21235440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3847}}^1$

素因数の和:3886

約数の個数: 80

約数和(自身を含む): 68709888

約数和(自身を除く): 47474448

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3847, 5520, 7694, 11541, 15388, 19235, 23082, 30776, 38470, 46164, 57705, 61552, 76940, 88481, 92328, 115410, 153880, 176962, 184656, 230820, 265443, 307760, 353924, 442405, 461640, 530886, 707848, 884810, 923280, 1061772, 1327215, 1415696, 1769620, 2123544, 2654430, 3539240, 4247088, 5308860, 7078480, 10617720, 21235440]

約数ペア:

[(1, 21235440), (2, 10617720), (3, 7078480), (4, 5308860), (5, 4247088), (6, 3539240), (8, 2654430), (10, 2123544), (12, 1769620), (15, 1415696), (16, 1327215), (20, 1061772), (23, 923280), (24, 884810), (30, 707848), (40, 530886), (46, 461640), (48, 442405), (60, 353924), (69, 307760), (80, 265443), (92, 230820), (115, 184656), (120, 176962), (138, 153880), (184, 115410), (230, 92328), (240, 88481), (276, 76940), (345, 61552), (368, 57705), (460, 46164), (552, 38470), (690, 30776), (920, 23082), (1104, 19235), (1380, 15388), (1840, 11541), (2760, 7694), (3847, 5520)]