21880560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7013}}^1$

素因数の和:7042

約数の個数: 80

約数和(自身を含む): 73057824

約数和(自身を除く): 51177264

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 7013, 14026, 21039, 28052, 35065, 42078, 56104, 70130, 84156, 91169, 105195, 112208, 140260, 168312, 182338, 210390, 273507, 280520, 336624, 364676, 420780, 455845, 547014, 561040, 729352, 841560, 911690, 1094028, 1367535, 1458704, 1683120, 1823380, 2188056, 2735070, 3646760, 4376112, 5470140, 7293520, 10940280, 21880560]

約数ペア:

[(1, 21880560), (2, 10940280), (3, 7293520), (4, 5470140), (5, 4376112), (6, 3646760), (8, 2735070), (10, 2188056), (12, 1823380), (13, 1683120), (15, 1458704), (16, 1367535), (20, 1094028), (24, 911690), (26, 841560), (30, 729352), (39, 561040), (40, 547014), (48, 455845), (52, 420780), (60, 364676), (65, 336624), (78, 280520), (80, 273507), (104, 210390), (120, 182338), (130, 168312), (156, 140260), (195, 112208), (208, 105195), (240, 91169), (260, 84156), (312, 70130), (390, 56104), (520, 42078), (624, 35065), (780, 28052), (1040, 21039), (1560, 14026), (3120, 7013)]