21000391620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{99349}}^1$

素因数の和:99645

約数の個数: 96

約数和(自身を含む): 63558566400

約数和(自身を除く): 42558174780

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, 271, 390, 542, 780, 813, 1084, 1355, 1626, 2710, 3252, 3523, 4065, 5420, 7046, 8130, 10569, 14092, 16260, 17615, 21138, 35230, 42276, 52845, 70460, 99349, 105690, 198698, 211380, 298047, 397396, 496745, 596094, 993490, 1192188, 1291537, 1490235, 1986980, 2583074, 2980470, 3874611, 5166148, 5960940, 6457685, 7749222, 12915370, 15498444, 19373055, 25830740, 26923579, 38746110, 53847158, 77492220, 80770737, 107694316, 134617895, 161541474, 269235790, 323082948, 350006527, 403853685, 538471580, 700013054, 807707370, 1050019581, 1400026108, 1615414740, 1750032635, 2100039162, 3500065270, 4200078324, 5250097905, 7000130540, 10500195810, 21000391620]

約数ペア:

[(1, 21000391620), (2, 10500195810), (3, 7000130540), (4, 5250097905), (5, 4200078324), (6, 3500065270), (10, 2100039162), (12, 1750032635), (13, 1615414740), (15, 1400026108), (20, 1050019581), (26, 807707370), (30, 700013054), (39, 538471580), (52, 403853685), (60, 350006527), (65, 323082948), (78, 269235790), (130, 161541474), (156, 134617895), (195, 107694316), (260, 80770737), (271, 77492220), (390, 53847158), (542, 38746110), (780, 26923579), (813, 25830740), (1084, 19373055), (1355, 15498444), (1626, 12915370), (2710, 7749222), (3252, 6457685), (3523, 5960940), (4065, 5166148), (5420, 3874611), (7046, 2980470), (8130, 2583074), (10569, 1986980), (14092, 1490235), (16260, 1291537), (17615, 1192188), (21138, 993490), (35230, 596094), (42276, 496745), (52845, 397396), (70460, 298047), (99349, 211380), (105690, 198698)]