71987860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 193914000

約数和(自身を除く): 121926140

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 29, 34, 35, 49, 58, 68, 70, 85, 98, 116, 119, 140, 145, 149, 170, 196, 203, 238, 245, 290, 298, 340, 406, 476, 490, 493, 580, 595, 596, 745, 812, 833, 980, 986, 1015, 1043, 1190, 1421, 1490, 1666, 1972, 2030, 2086, 2380, 2465, 2533, 2842, 2980, 3332, 3451, 4060, 4165, 4172, 4321, 4930, 5066, 5215, 5684, 6902, 7105, 7301, 8330, 8642, 9860, 10132, 10430, 12665, 13804, 14210, 14602, 16660, 17255, 17284, 17731, 20860, 21605, 24157, 25330, 28420, 29204, 30247, 34510, 35462, 36505, 43210, 48314, 50660, 60494, 69020, 70924, 73010, 73457, 86420, 88655, 96628, 120785, 120988, 124117, 146020, 146914, 151235, 177310, 211729, 241570, 248234, 293828, 302470, 354620, 367285, 423458, 483140, 496468, 514199, 604940, 620585, 734570, 846916, 1028398, 1058645, 1241170, 1469140, 2056796, 2117290, 2482340, 2570995, 3599393, 4234580, 5141990, 7198786, 10283980, 14397572, 17996965, 35993930, 71987860]

約数ペア:

[(1, 71987860), (2, 35993930), (4, 17996965), (5, 14397572), (7, 10283980), (10, 7198786), (14, 5141990), (17, 4234580), (20, 3599393), (28, 2570995), (29, 2482340), (34, 2117290), (35, 2056796), (49, 1469140), (58, 1241170), (68, 1058645), (70, 1028398), (85, 846916), (98, 734570), (116, 620585), (119, 604940), (140, 514199), (145, 496468), (149, 483140), (170, 423458), (196, 367285), (203, 354620), (238, 302470), (245, 293828), (290, 248234), (298, 241570), (340, 211729), (406, 177310), (476, 151235), (490, 146914), (493, 146020), (580, 124117), (595, 120988), (596, 120785), (745, 96628), (812, 88655), (833, 86420), (980, 73457), (986, 73010), (1015, 70924), (1043, 69020), (1190, 60494), (1421, 50660), (1490, 48314), (1666, 43210), (1972, 36505), (2030, 35462), (2086, 34510), (2380, 30247), (2465, 29204), (2533, 28420), (2842, 25330), (2980, 24157), (3332, 21605), (3451, 20860), (4060, 17731), (4165, 17284), (4172, 17255), (4321, 16660), (4930, 14602), (5066, 14210), (5215, 13804), (5684, 12665), (6902, 10430), (7105, 10132), (7301, 9860), (8330, 8642)]