388904920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{971}}^1$

素因数の和:1049

約数の個数: 128

約数和(自身を含む): 1007769600

約数和(自身を除く): 618864680

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 31, 34, 38, 40, 62, 68, 76, 85, 95, 124, 136, 152, 155, 170, 190, 248, 310, 323, 340, 380, 527, 589, 620, 646, 680, 760, 971, 1054, 1178, 1240, 1292, 1615, 1942, 2108, 2356, 2584, 2635, 2945, 3230, 3884, 4216, 4712, 4855, 5270, 5890, 6460, 7768, 9710, 10013, 10540, 11780, 12920, 16507, 18449, 19420, 20026, 21080, 23560, 30101, 33014, 36898, 38840, 40052, 50065, 60202, 66028, 73796, 80104, 82535, 92245, 100130, 120404, 132056, 147592, 150505, 165070, 184490, 200260, 240808, 301010, 313633, 330140, 368980, 400520, 511717, 571919, 602020, 627266, 660280, 737960, 1023434, 1143838, 1204040, 1254532, 1568165, 2046868, 2287676, 2509064, 2558585, 2859595, 3136330, 4093736, 4575352, 5117170, 5719190, 6272660, 9722623, 10234340, 11438380, 12545320, 19445246, 20468680, 22876760, 38890492, 48613115, 77780984, 97226230, 194452460, 388904920]

約数ペア:

[(1, 388904920), (2, 194452460), (4, 97226230), (5, 77780984), (8, 48613115), (10, 38890492), (17, 22876760), (19, 20468680), (20, 19445246), (31, 12545320), (34, 11438380), (38, 10234340), (40, 9722623), (62, 6272660), (68, 5719190), (76, 5117170), (85, 4575352), (95, 4093736), (124, 3136330), (136, 2859595), (152, 2558585), (155, 2509064), (170, 2287676), (190, 2046868), (248, 1568165), (310, 1254532), (323, 1204040), (340, 1143838), (380, 1023434), (527, 737960), (589, 660280), (620, 627266), (646, 602020), (680, 571919), (760, 511717), (971, 400520), (1054, 368980), (1178, 330140), (1240, 313633), (1292, 301010), (1615, 240808), (1942, 200260), (2108, 184490), (2356, 165070), (2584, 150505), (2635, 147592), (2945, 132056), (3230, 120404), (3884, 100130), (4216, 92245), (4712, 82535), (4855, 80104), (5270, 73796), (5890, 66028), (6460, 60202), (7768, 50065), (9710, 40052), (10013, 38840), (10540, 36898), (11780, 33014), (12920, 30101), (16507, 23560), (18449, 21080), (19420, 20026)]