156723980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{15767}}^1$

素因数の和:15854

約数の個数: 48

約数和(自身を含む): 381459456

約数和(自身を除く): 224735476

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 15767, 31534, 63068, 78835, 110369, 157670, 220738, 315340, 441476, 551845, 1103690, 1119457, 2207380, 2238914, 4477828, 5597285, 7836199, 11194570, 15672398, 22389140, 31344796, 39180995, 78361990, 156723980]

約数ペア:

[(1, 156723980), (2, 78361990), (4, 39180995), (5, 31344796), (7, 22389140), (10, 15672398), (14, 11194570), (20, 7836199), (28, 5597285), (35, 4477828), (70, 2238914), (71, 2207380), (140, 1119457), (142, 1103690), (284, 551845), (355, 441476), (497, 315340), (710, 220738), (994, 157670), (1420, 110369), (1988, 78835), (2485, 63068), (4970, 31534), (9940, 15767)]