20404860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2557}}^1$

素因数の和:2595

約数の個数: 96

約数和(自身を含む): 68759040

約数和(自身を除く): 48354180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2557, 2660, 3990, 5114, 7671, 7980, 10228, 12785, 15342, 17899, 25570, 30684, 35798, 38355, 48583, 51140, 53697, 71596, 76710, 89495, 97166, 107394, 145749, 153420, 178990, 194332, 214788, 242915, 268485, 291498, 340081, 357980, 485830, 536970, 582996, 680162, 728745, 971660, 1020243, 1073940, 1360324, 1457490, 1700405, 2040486, 2914980, 3400810, 4080972, 5101215, 6801620, 10202430, 20404860]

約数ペア:

[(1, 20404860), (2, 10202430), (3, 6801620), (4, 5101215), (5, 4080972), (6, 3400810), (7, 2914980), (10, 2040486), (12, 1700405), (14, 1457490), (15, 1360324), (19, 1073940), (20, 1020243), (21, 971660), (28, 728745), (30, 680162), (35, 582996), (38, 536970), (42, 485830), (57, 357980), (60, 340081), (70, 291498), (76, 268485), (84, 242915), (95, 214788), (105, 194332), (114, 178990), (133, 153420), (140, 145749), (190, 107394), (210, 97166), (228, 89495), (266, 76710), (285, 71596), (380, 53697), (399, 51140), (420, 48583), (532, 38355), (570, 35798), (665, 30684), (798, 25570), (1140, 17899), (1330, 15342), (1596, 12785), (1995, 10228), (2557, 7980), (2660, 7671), (3990, 5114)]