18487980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:165

約数の個数: 192

約数和(自身を含む): 67630080

約数和(自身を除く): 49142100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 67, 70, 73, 84, 90, 105, 108, 126, 134, 135, 140, 146, 180, 189, 201, 210, 219, 252, 268, 270, 292, 315, 335, 365, 378, 402, 420, 438, 469, 511, 540, 603, 630, 657, 670, 730, 756, 804, 876, 938, 945, 1005, 1022, 1095, 1206, 1260, 1314, 1340, 1407, 1460, 1533, 1809, 1876, 1890, 1971, 2010, 2044, 2190, 2345, 2412, 2555, 2628, 2814, 3015, 3066, 3285, 3618, 3780, 3942, 4020, 4221, 4380, 4599, 4690, 4891, 5110, 5628, 6030, 6132, 6570, 7035, 7236, 7665, 7884, 8442, 9045, 9198, 9380, 9782, 9855, 10220, 12060, 12663, 13140, 13797, 14070, 14673, 15330, 16884, 18090, 18396, 19564, 19710, 21105, 22995, 24455, 25326, 27594, 28140, 29346, 30660, 34237, 36180, 39420, 42210, 44019, 45990, 48910, 50652, 55188, 58692, 63315, 68474, 68985, 73365, 84420, 88038, 91980, 97820, 102711, 126630, 132057, 136948, 137970, 146730, 171185, 176076, 205422, 220095, 253260, 264114, 275940, 293460, 308133, 342370, 410844, 440190, 513555, 528228, 616266, 660285, 684740, 880380, 924399, 1027110, 1232532, 1320570, 1540665, 1848798, 2054220, 2641140, 3081330, 3697596, 4621995, 6162660, 9243990, 18487980]

約数ペア:

[(1, 18487980), (2, 9243990), (3, 6162660), (4, 4621995), (5, 3697596), (6, 3081330), (7, 2641140), (9, 2054220), (10, 1848798), (12, 1540665), (14, 1320570), (15, 1232532), (18, 1027110), (20, 924399), (21, 880380), (27, 684740), (28, 660285), (30, 616266), (35, 528228), (36, 513555), (42, 440190), (45, 410844), (54, 342370), (60, 308133), (63, 293460), (67, 275940), (70, 264114), (73, 253260), (84, 220095), (90, 205422), (105, 176076), (108, 171185), (126, 146730), (134, 137970), (135, 136948), (140, 132057), (146, 126630), (180, 102711), (189, 97820), (201, 91980), (210, 88038), (219, 84420), (252, 73365), (268, 68985), (270, 68474), (292, 63315), (315, 58692), (335, 55188), (365, 50652), (378, 48910), (402, 45990), (420, 44019), (438, 42210), (469, 39420), (511, 36180), (540, 34237), (603, 30660), (630, 29346), (657, 28140), (670, 27594), (730, 25326), (756, 24455), (804, 22995), (876, 21105), (938, 19710), (945, 19564), (1005, 18396), (1022, 18090), (1095, 16884), (1206, 15330), (1260, 14673), (1314, 14070), (1340, 13797), (1407, 13140), (1460, 12663), (1533, 12060), (1809, 10220), (1876, 9855), (1890, 9782), (1971, 9380), (2010, 9198), (2044, 9045), (2190, 8442), (2345, 7884), (2412, 7665), (2555, 7236), (2628, 7035), (2814, 6570), (3015, 6132), (3066, 6030), (3285, 5628), (3618, 5110), (3780, 4891), (3942, 4690), (4020, 4599), (4221, 4380)]