21915180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17393}}^1$

素因数の和:17415

約数の個数: 72

約数和(自身を含む): 75976992

約数和(自身を除く): 54061812

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17393, 34786, 52179, 69572, 86965, 104358, 121751, 156537, 173930, 208716, 243502, 260895, 313074, 347860, 365253, 487004, 521790, 608755, 626148, 730506, 782685, 1043580, 1095759, 1217510, 1461012, 1565370, 1826265, 2191518, 2435020, 3130740, 3652530, 4383036, 5478795, 7305060, 10957590, 21915180]

約数ペア:

[(1, 21915180), (2, 10957590), (3, 7305060), (4, 5478795), (5, 4383036), (6, 3652530), (7, 3130740), (9, 2435020), (10, 2191518), (12, 1826265), (14, 1565370), (15, 1461012), (18, 1217510), (20, 1095759), (21, 1043580), (28, 782685), (30, 730506), (35, 626148), (36, 608755), (42, 521790), (45, 487004), (60, 365253), (63, 347860), (70, 313074), (84, 260895), (90, 243502), (105, 208716), (126, 173930), (140, 156537), (180, 121751), (210, 104358), (252, 86965), (315, 69572), (420, 52179), (630, 34786), (1260, 17393)]