1999823980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{3271}}^1$

素因数の和:3695

約数の個数: 96

約数和(自身を含む): 5250696192

約数和(自身を除く): 3250872212

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 397, 770, 794, 1540, 1588, 1985, 2779, 3271, 3970, 4367, 5558, 6542, 7940, 8734, 11116, 13084, 13895, 16355, 17468, 21835, 22897, 27790, 30569, 32710, 35981, 43670, 45794, 55580, 61138, 65420, 71962, 87340, 91588, 114485, 122276, 143924, 152845, 179905, 228970, 251867, 305690, 359810, 457940, 503734, 611380, 719620, 1007468, 1259335, 1298587, 2518670, 2597174, 5037340, 5194348, 6492935, 9090109, 12985870, 14284457, 18180218, 25971740, 28568914, 36360436, 45450545, 57137828, 71422285, 90901090, 99991199, 142844570, 181802180, 199982398, 285689140, 399964796, 499955995, 999911990, 1999823980]

約数ペア:

[(1, 1999823980), (2, 999911990), (4, 499955995), (5, 399964796), (7, 285689140), (10, 199982398), (11, 181802180), (14, 142844570), (20, 99991199), (22, 90901090), (28, 71422285), (35, 57137828), (44, 45450545), (55, 36360436), (70, 28568914), (77, 25971740), (110, 18180218), (140, 14284457), (154, 12985870), (220, 9090109), (308, 6492935), (385, 5194348), (397, 5037340), (770, 2597174), (794, 2518670), (1540, 1298587), (1588, 1259335), (1985, 1007468), (2779, 719620), (3271, 611380), (3970, 503734), (4367, 457940), (5558, 359810), (6542, 305690), (7940, 251867), (8734, 228970), (11116, 179905), (13084, 152845), (13895, 143924), (16355, 122276), (17468, 114485), (21835, 91588), (22897, 87340), (27790, 71962), (30569, 65420), (32710, 61138), (35981, 55580), (43670, 45794)]