218901860

素因数分解:

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

素因数の和:353

約数の個数: 72

約数和(自身を含む): 506920680

約数和(自身を除く): 288018820

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 149, 170, 290, 298, 340, 493, 580, 596, 745, 986, 1490, 1972, 2465, 2533, 2980, 4321, 4930, 5066, 8642, 9860, 10132, 12665, 17284, 21605, 22201, 25330, 43210, 44402, 50660, 73457, 86420, 88804, 111005, 146914, 222010, 293828, 367285, 377417, 444020, 643829, 734570, 754834, 1287658, 1469140, 1509668, 1887085, 2575316, 3219145, 3774170, 6438290, 7548340, 10945093, 12876580, 21890186, 43780372, 54725465, 109450930, 218901860]

約数ペア:

[(1, 218901860), (2, 109450930), (4, 54725465), (5, 43780372), (10, 21890186), (17, 12876580), (20, 10945093), (29, 7548340), (34, 6438290), (58, 3774170), (68, 3219145), (85, 2575316), (116, 1887085), (145, 1509668), (149, 1469140), (170, 1287658), (290, 754834), (298, 734570), (340, 643829), (493, 444020), (580, 377417), (596, 367285), (745, 293828), (986, 222010), (1490, 146914), (1972, 111005), (2465, 88804), (2533, 86420), (2980, 73457), (4321, 50660), (4930, 44402), (5066, 43210), (8642, 25330), (9860, 22201), (10132, 21605), (12665, 17284)]