2204540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 5103840

約数和(自身を除く): 2899300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 139, 244, 260, 278, 305, 556, 610, 695, 793, 1220, 1390, 1586, 1807, 2780, 3172, 3614, 3965, 7228, 7930, 8479, 9035, 15860, 16958, 18070, 33916, 36140, 42395, 84790, 110227, 169580, 220454, 440908, 551135, 1102270, 2204540]

約数ペア:

[(1, 2204540), (2, 1102270), (4, 551135), (5, 440908), (10, 220454), (13, 169580), (20, 110227), (26, 84790), (52, 42395), (61, 36140), (65, 33916), (122, 18070), (130, 16958), (139, 15860), (244, 9035), (260, 8479), (278, 7930), (305, 7228), (556, 3965), (610, 3614), (695, 3172), (793, 2780), (1220, 1807), (1390, 1586)]