21341580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27361}}^1$

素因数の和:27386

約数の個数: 48

約数和(自身を含む): 64355424

約数和(自身を除く): 43013844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27361, 54722, 82083, 109444, 136805, 164166, 273610, 328332, 355693, 410415, 547220, 711386, 820830, 1067079, 1422772, 1641660, 1778465, 2134158, 3556930, 4268316, 5335395, 7113860, 10670790, 21341580]

約数ペア:

[(1, 21341580), (2, 10670790), (3, 7113860), (4, 5335395), (5, 4268316), (6, 3556930), (10, 2134158), (12, 1778465), (13, 1641660), (15, 1422772), (20, 1067079), (26, 820830), (30, 711386), (39, 547220), (52, 410415), (60, 355693), (65, 328332), (78, 273610), (130, 164166), (156, 136805), (195, 109444), (260, 82083), (390, 54722), (780, 27361)]