131271980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:232

約数の個数: 144

約数和(自身を含む): 344736000

約数和(自身を除く): 213464020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 31, 35, 49, 58, 62, 70, 98, 116, 124, 140, 145, 149, 155, 196, 203, 217, 245, 290, 298, 310, 406, 434, 490, 580, 596, 620, 745, 812, 868, 899, 980, 1015, 1043, 1085, 1421, 1490, 1519, 1798, 2030, 2086, 2170, 2842, 2980, 3038, 3596, 4060, 4172, 4321, 4340, 4495, 4619, 5215, 5684, 6076, 6293, 7105, 7301, 7595, 8642, 8990, 9238, 10430, 12586, 14210, 14602, 15190, 17284, 17980, 18476, 20860, 21605, 23095, 25172, 28420, 29204, 30247, 30380, 31465, 32333, 36505, 43210, 44051, 46190, 60494, 62930, 64666, 73010, 86420, 88102, 92380, 120988, 125860, 129332, 133951, 146020, 151235, 161665, 176204, 211729, 220255, 226331, 267902, 302470, 323330, 423458, 440510, 452662, 535804, 604940, 646660, 669755, 846916, 881020, 905324, 937657, 1058645, 1131655, 1339510, 1875314, 2117290, 2263310, 2679020, 3750628, 4234580, 4526620, 4688285, 6563599, 9376570, 13127198, 18753140, 26254396, 32817995, 65635990, 131271980]

約数ペア:

[(1, 131271980), (2, 65635990), (4, 32817995), (5, 26254396), (7, 18753140), (10, 13127198), (14, 9376570), (20, 6563599), (28, 4688285), (29, 4526620), (31, 4234580), (35, 3750628), (49, 2679020), (58, 2263310), (62, 2117290), (70, 1875314), (98, 1339510), (116, 1131655), (124, 1058645), (140, 937657), (145, 905324), (149, 881020), (155, 846916), (196, 669755), (203, 646660), (217, 604940), (245, 535804), (290, 452662), (298, 440510), (310, 423458), (406, 323330), (434, 302470), (490, 267902), (580, 226331), (596, 220255), (620, 211729), (745, 176204), (812, 161665), (868, 151235), (899, 146020), (980, 133951), (1015, 129332), (1043, 125860), (1085, 120988), (1421, 92380), (1490, 88102), (1519, 86420), (1798, 73010), (2030, 64666), (2086, 62930), (2170, 60494), (2842, 46190), (2980, 44051), (3038, 43210), (3596, 36505), (4060, 32333), (4172, 31465), (4321, 30380), (4340, 30247), (4495, 29204), (4619, 28420), (5215, 25172), (5684, 23095), (6076, 21605), (6293, 20860), (7105, 18476), (7301, 17980), (7595, 17284), (8642, 15190), (8990, 14602), (9238, 14210), (10430, 12586)]