31440820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 76446720

約数和(自身を除く): 45005900

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 31, 34, 38, 62, 68, 76, 85, 95, 124, 155, 157, 170, 190, 310, 314, 323, 340, 380, 527, 589, 620, 628, 646, 785, 1054, 1178, 1292, 1570, 1615, 2108, 2356, 2635, 2669, 2945, 2983, 3140, 3230, 4867, 5270, 5338, 5890, 5966, 6460, 9734, 10013, 10540, 10676, 11780, 11932, 13345, 14915, 19468, 20026, 24335, 26690, 29830, 40052, 48670, 50065, 50711, 53380, 59660, 82739, 92473, 97340, 100130, 101422, 165478, 184946, 200260, 202844, 253555, 330956, 369892, 413695, 462365, 507110, 827390, 924730, 1014220, 1572041, 1654780, 1849460, 3144082, 6288164, 7860205, 15720410, 31440820]

約数ペア:

[(1, 31440820), (2, 15720410), (4, 7860205), (5, 6288164), (10, 3144082), (17, 1849460), (19, 1654780), (20, 1572041), (31, 1014220), (34, 924730), (38, 827390), (62, 507110), (68, 462365), (76, 413695), (85, 369892), (95, 330956), (124, 253555), (155, 202844), (157, 200260), (170, 184946), (190, 165478), (310, 101422), (314, 100130), (323, 97340), (340, 92473), (380, 82739), (527, 59660), (589, 53380), (620, 50711), (628, 50065), (646, 48670), (785, 40052), (1054, 29830), (1178, 26690), (1292, 24335), (1570, 20026), (1615, 19468), (2108, 14915), (2356, 13345), (2635, 11932), (2669, 11780), (2945, 10676), (2983, 10540), (3140, 10013), (3230, 9734), (4867, 6460), (5270, 5966), (5338, 5890)]