90219920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5197}}^1$

素因数の和:5248

約数の個数: 80

約数和(自身を含む): 247507968

約数和(自身を除く): 157288048

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 5197, 8680, 10394, 17360, 20788, 25985, 36379, 41576, 51970, 72758, 83152, 103940, 145516, 161107, 181895, 207880, 291032, 322214, 363790, 415760, 582064, 644428, 727580, 805535, 1127749, 1288856, 1455160, 1611070, 2255498, 2577712, 2910320, 3222140, 4510996, 5638745, 6444280, 9021992, 11277490, 12888560, 18043984, 22554980, 45109960, 90219920]

約数ペア:

[(1, 90219920), (2, 45109960), (4, 22554980), (5, 18043984), (7, 12888560), (8, 11277490), (10, 9021992), (14, 6444280), (16, 5638745), (20, 4510996), (28, 3222140), (31, 2910320), (35, 2577712), (40, 2255498), (56, 1611070), (62, 1455160), (70, 1288856), (80, 1127749), (112, 805535), (124, 727580), (140, 644428), (155, 582064), (217, 415760), (248, 363790), (280, 322214), (310, 291032), (434, 207880), (496, 181895), (560, 161107), (620, 145516), (868, 103940), (1085, 83152), (1240, 72758), (1736, 51970), (2170, 41576), (2480, 36379), (3472, 25985), (4340, 20788), (5197, 17360), (8680, 10394)]