20914530

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 128

約数和(自身を含む): 63479808

約数和(自身を除く): 42565278

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 47, 65, 70, 78, 91, 94, 105, 130, 141, 163, 182, 195, 210, 235, 273, 282, 326, 329, 390, 455, 470, 489, 546, 611, 658, 705, 815, 910, 978, 987, 1141, 1222, 1365, 1410, 1630, 1645, 1833, 1974, 2119, 2282, 2445, 2730, 3055, 3290, 3423, 3666, 4238, 4277, 4890, 4935, 5705, 6110, 6357, 6846, 7661, 8554, 9165, 9870, 10595, 11410, 12714, 12831, 14833, 15322, 17115, 18330, 21190, 21385, 22983, 25662, 29666, 31785, 34230, 38305, 42770, 44499, 45966, 53627, 63570, 64155, 74165, 76610, 88998, 99593, 107254, 114915, 128310, 148330, 160881, 199186, 222495, 229830, 268135, 298779, 321762, 444990, 497965, 536270, 597558, 697151, 804405, 995930, 1394302, 1493895, 1608810, 2091453, 2987790, 3485755, 4182906, 6971510, 10457265, 20914530]

約数ペア:

[(1, 20914530), (2, 10457265), (3, 6971510), (5, 4182906), (6, 3485755), (7, 2987790), (10, 2091453), (13, 1608810), (14, 1493895), (15, 1394302), (21, 995930), (26, 804405), (30, 697151), (35, 597558), (39, 536270), (42, 497965), (47, 444990), (65, 321762), (70, 298779), (78, 268135), (91, 229830), (94, 222495), (105, 199186), (130, 160881), (141, 148330), (163, 128310), (182, 114915), (195, 107254), (210, 99593), (235, 88998), (273, 76610), (282, 74165), (326, 64155), (329, 63570), (390, 53627), (455, 45966), (470, 44499), (489, 42770), (546, 38305), (611, 34230), (658, 31785), (705, 29666), (815, 25662), (910, 22983), (978, 21385), (987, 21190), (1141, 18330), (1222, 17115), (1365, 15322), (1410, 14833), (1630, 12831), (1645, 12714), (1833, 11410), (1974, 10595), (2119, 9870), (2282, 9165), (2445, 8554), (2730, 7661), (3055, 6846), (3290, 6357), (3423, 6110), (3666, 5705), (4238, 4935), (4277, 4890)]