21311280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29599}}^1$

素因数の和:29618

約数の個数: 60

約数和(自身を含む): 71572800

約数和(自身を除く): 50261520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29599, 59198, 88797, 118396, 147995, 177594, 236792, 266391, 295990, 355188, 443985, 473584, 532782, 591980, 710376, 887970, 1065564, 1183960, 1331955, 1420752, 1775940, 2131128, 2367920, 2663910, 3551880, 4262256, 5327820, 7103760, 10655640, 21311280]

約数ペア:

[(1, 21311280), (2, 10655640), (3, 7103760), (4, 5327820), (5, 4262256), (6, 3551880), (8, 2663910), (9, 2367920), (10, 2131128), (12, 1775940), (15, 1420752), (16, 1331955), (18, 1183960), (20, 1065564), (24, 887970), (30, 710376), (36, 591980), (40, 532782), (45, 473584), (48, 443985), (60, 355188), (72, 295990), (80, 266391), (90, 236792), (120, 177594), (144, 147995), (180, 118396), (240, 88797), (360, 59198), (720, 29599)]