195840640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{9871}}^1$

素因数の和:9921

約数の個数: 64

約数和(自身を含む): 483333120

約数和(自身を除く): 287492480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9871, 9920, 19742, 19840, 39484, 49355, 78968, 98710, 157936, 197420, 306001, 315872, 394840, 612002, 631744, 789680, 1224004, 1263488, 1530005, 1579360, 2448008, 3060010, 3158720, 4896016, 6120020, 6317440, 9792032, 12240040, 19584064, 24480080, 39168128, 48960160, 97920320, 195840640]

約数ペア:

[(1, 195840640), (2, 97920320), (4, 48960160), (5, 39168128), (8, 24480080), (10, 19584064), (16, 12240040), (20, 9792032), (31, 6317440), (32, 6120020), (40, 4896016), (62, 3158720), (64, 3060010), (80, 2448008), (124, 1579360), (128, 1530005), (155, 1263488), (160, 1224004), (248, 789680), (310, 631744), (320, 612002), (496, 394840), (620, 315872), (640, 306001), (992, 197420), (1240, 157936), (1984, 98710), (2480, 78968), (3968, 49355), (4960, 39484), (9871, 19840), (9920, 19742)]