81327260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2677}}^1$

素因数の和:2731

約数の個数: 72

約数和(自身を含む): 205156224

約数和(自身を除く): 123828964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 2677, 3038, 4340, 5354, 6076, 7595, 10708, 13385, 15190, 18739, 26770, 30380, 37478, 53540, 74956, 82987, 93695, 131173, 165974, 187390, 262346, 331948, 374780, 414935, 524692, 580909, 655865, 829870, 1161818, 1311730, 1659740, 2323636, 2623460, 2904545, 4066363, 5809090, 8132726, 11618180, 16265452, 20331815, 40663630, 81327260]

約数ペア:

[(1, 81327260), (2, 40663630), (4, 20331815), (5, 16265452), (7, 11618180), (10, 8132726), (14, 5809090), (20, 4066363), (28, 2904545), (31, 2623460), (35, 2323636), (49, 1659740), (62, 1311730), (70, 1161818), (98, 829870), (124, 655865), (140, 580909), (155, 524692), (196, 414935), (217, 374780), (245, 331948), (310, 262346), (434, 187390), (490, 165974), (620, 131173), (868, 93695), (980, 82987), (1085, 74956), (1519, 53540), (2170, 37478), (2677, 30380), (3038, 26770), (4340, 18739), (5354, 15190), (6076, 13385), (7595, 10708)]