19905750

素因数分解:

$2^1\times 3^4\times 5^3\times {\mathrm{983}}^1$

素因数の和:1012

約数の個数: 80

約数和(自身を含む): 55721952

約数和(自身を除く): 35816202

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 50, 54, 75, 81, 90, 125, 135, 150, 162, 225, 250, 270, 375, 405, 450, 675, 750, 810, 983, 1125, 1350, 1966, 2025, 2250, 2949, 3375, 4050, 4915, 5898, 6750, 8847, 9830, 10125, 14745, 17694, 20250, 24575, 26541, 29490, 44235, 49150, 53082, 73725, 79623, 88470, 122875, 132705, 147450, 159246, 221175, 245750, 265410, 368625, 398115, 442350, 663525, 737250, 796230, 1105875, 1327050, 1990575, 2211750, 3317625, 3981150, 6635250, 9952875, 19905750]

約数ペア:

[(1, 19905750), (2, 9952875), (3, 6635250), (5, 3981150), (6, 3317625), (9, 2211750), (10, 1990575), (15, 1327050), (18, 1105875), (25, 796230), (27, 737250), (30, 663525), (45, 442350), (50, 398115), (54, 368625), (75, 265410), (81, 245750), (90, 221175), (125, 159246), (135, 147450), (150, 132705), (162, 122875), (225, 88470), (250, 79623), (270, 73725), (375, 53082), (405, 49150), (450, 44235), (675, 29490), (750, 26541), (810, 24575), (983, 20250), (1125, 17694), (1350, 14745), (1966, 10125), (2025, 9830), (2250, 8847), (2949, 6750), (3375, 5898), (4050, 4915)]