21858060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{733}}^1$

素因数の和:823

約数の個数: 96

約数和(自身を含む): 71027712

約数和(自身を除く): 49169652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 710, 733, 852, 994, 1065, 1420, 1466, 1491, 1988, 2130, 2199, 2485, 2932, 2982, 3665, 4260, 4398, 4970, 5131, 5964, 7330, 7455, 8796, 9940, 10262, 10995, 14660, 14910, 15393, 20524, 21990, 25655, 29820, 30786, 43980, 51310, 52043, 61572, 76965, 102620, 104086, 153930, 156129, 208172, 260215, 307860, 312258, 364301, 520430, 624516, 728602, 780645, 1040860, 1092903, 1457204, 1561290, 1821505, 2185806, 3122580, 3643010, 4371612, 5464515, 7286020, 10929030, 21858060]

約数ペア:

[(1, 21858060), (2, 10929030), (3, 7286020), (4, 5464515), (5, 4371612), (6, 3643010), (7, 3122580), (10, 2185806), (12, 1821505), (14, 1561290), (15, 1457204), (20, 1092903), (21, 1040860), (28, 780645), (30, 728602), (35, 624516), (42, 520430), (60, 364301), (70, 312258), (71, 307860), (84, 260215), (105, 208172), (140, 156129), (142, 153930), (210, 104086), (213, 102620), (284, 76965), (355, 61572), (420, 52043), (426, 51310), (497, 43980), (710, 30786), (733, 29820), (852, 25655), (994, 21990), (1065, 20524), (1420, 15393), (1466, 14910), (1491, 14660), (1988, 10995), (2130, 10262), (2199, 9940), (2485, 8796), (2932, 7455), (2982, 7330), (3665, 5964), (4260, 5131), (4398, 4970)]