81964860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71899}}^1$

素因数の和:71930

約数の個数: 48

約数和(自身を含む): 241584000

約数和(自身を除く): 159619140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 71899, 143798, 215697, 287596, 359495, 431394, 718990, 862788, 1078485, 1366081, 1437980, 2156970, 2732162, 4098243, 4313940, 5464324, 6830405, 8196486, 13660810, 16392972, 20491215, 27321620, 40982430, 81964860]

約数ペア:

[(1, 81964860), (2, 40982430), (3, 27321620), (4, 20491215), (5, 16392972), (6, 13660810), (10, 8196486), (12, 6830405), (15, 5464324), (19, 4313940), (20, 4098243), (30, 2732162), (38, 2156970), (57, 1437980), (60, 1366081), (76, 1078485), (95, 862788), (114, 718990), (190, 431394), (228, 359495), (285, 287596), (380, 215697), (570, 143798), (1140, 71899)]