21578340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{619}}^1$

素因数の和:721

約数の個数: 96

約数和(自身を含む): 69995520

約数和(自身を除く): 48417180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 249, 332, 415, 420, 498, 581, 619, 830, 996, 1162, 1238, 1245, 1660, 1743, 1857, 2324, 2476, 2490, 2905, 3095, 3486, 3714, 4333, 4980, 5810, 6190, 6972, 7428, 8666, 8715, 9285, 11620, 12380, 12999, 17332, 17430, 18570, 21665, 25998, 34860, 37140, 43330, 51377, 51996, 64995, 86660, 102754, 129990, 154131, 205508, 256885, 259980, 308262, 359639, 513770, 616524, 719278, 770655, 1027540, 1078917, 1438556, 1541310, 1798195, 2157834, 3082620, 3596390, 4315668, 5394585, 7192780, 10789170, 21578340]

約数ペア:

[(1, 21578340), (2, 10789170), (3, 7192780), (4, 5394585), (5, 4315668), (6, 3596390), (7, 3082620), (10, 2157834), (12, 1798195), (14, 1541310), (15, 1438556), (20, 1078917), (21, 1027540), (28, 770655), (30, 719278), (35, 616524), (42, 513770), (60, 359639), (70, 308262), (83, 259980), (84, 256885), (105, 205508), (140, 154131), (166, 129990), (210, 102754), (249, 86660), (332, 64995), (415, 51996), (420, 51377), (498, 43330), (581, 37140), (619, 34860), (830, 25998), (996, 21665), (1162, 18570), (1238, 17430), (1245, 17332), (1660, 12999), (1743, 12380), (1857, 11620), (2324, 9285), (2476, 8715), (2490, 8666), (2905, 7428), (3095, 6972), (3486, 6190), (3714, 5810), (4333, 4980)]