21664860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7369}}^1$

素因数の和:7395

約数の個数: 72

約数和(自身を含む): 70575120

約数和(自身を除く): 48910260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7369, 14738, 22107, 29476, 36845, 44214, 51583, 73690, 88428, 103166, 110535, 147380, 154749, 206332, 221070, 257915, 309498, 361081, 442140, 515830, 618996, 722162, 773745, 1031660, 1083243, 1444324, 1547490, 1805405, 2166486, 3094980, 3610810, 4332972, 5416215, 7221620, 10832430, 21664860]

約数ペア:

[(1, 21664860), (2, 10832430), (3, 7221620), (4, 5416215), (5, 4332972), (6, 3610810), (7, 3094980), (10, 2166486), (12, 1805405), (14, 1547490), (15, 1444324), (20, 1083243), (21, 1031660), (28, 773745), (30, 722162), (35, 618996), (42, 515830), (49, 442140), (60, 361081), (70, 309498), (84, 257915), (98, 221070), (105, 206332), (140, 154749), (147, 147380), (196, 110535), (210, 103166), (245, 88428), (294, 73690), (420, 51583), (490, 44214), (588, 36845), (735, 29476), (980, 22107), (1470, 14738), (2940, 7369)]