21988980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9397}}^1$

素因数の和:9425

約数の個数: 72

約数和(自身を含む): 71838312

約数和(自身を除く): 49849332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9397, 18794, 28191, 37588, 46985, 56382, 84573, 93970, 112764, 122161, 140955, 169146, 187940, 244322, 281910, 338292, 366483, 422865, 488644, 563820, 610805, 732966, 845730, 1099449, 1221610, 1465932, 1691460, 1832415, 2198898, 2443220, 3664830, 4397796, 5497245, 7329660, 10994490, 21988980]

約数ペア:

[(1, 21988980), (2, 10994490), (3, 7329660), (4, 5497245), (5, 4397796), (6, 3664830), (9, 2443220), (10, 2198898), (12, 1832415), (13, 1691460), (15, 1465932), (18, 1221610), (20, 1099449), (26, 845730), (30, 732966), (36, 610805), (39, 563820), (45, 488644), (52, 422865), (60, 366483), (65, 338292), (78, 281910), (90, 244322), (117, 187940), (130, 169146), (156, 140955), (180, 122161), (195, 112764), (234, 93970), (260, 84573), (390, 56382), (468, 46985), (585, 37588), (780, 28191), (1170, 18794), (2340, 9397)]