21398790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14557}}^1$

素因数の和:14581

約数の個数: 48

約数和(自身を含む): 59746032

約数和(自身を除く): 38347242

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14557, 29114, 43671, 72785, 87342, 101899, 145570, 203798, 218355, 305697, 436710, 509495, 611394, 713293, 1018990, 1426586, 1528485, 2139879, 3056970, 3566465, 4279758, 7132930, 10699395, 21398790]

約数ペア:

[(1, 21398790), (2, 10699395), (3, 7132930), (5, 4279758), (6, 3566465), (7, 3056970), (10, 2139879), (14, 1528485), (15, 1426586), (21, 1018990), (30, 713293), (35, 611394), (42, 509495), (49, 436710), (70, 305697), (98, 218355), (105, 203798), (147, 145570), (210, 101899), (245, 87342), (294, 72785), (490, 43671), (735, 29114), (1470, 14557)]