21509820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:732

約数の個数: 96

約数和(自身を含む): 68120640

約数和(自身を除く): 46610820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 90, 108, 122, 135, 180, 183, 244, 270, 305, 366, 540, 549, 610, 653, 732, 915, 1098, 1220, 1306, 1647, 1830, 1959, 2196, 2612, 2745, 3265, 3294, 3660, 3918, 5490, 5877, 6530, 6588, 7836, 8235, 9795, 10980, 11754, 13060, 16470, 17631, 19590, 23508, 29385, 32940, 35262, 39180, 39833, 58770, 70524, 79666, 88155, 117540, 119499, 159332, 176310, 199165, 238998, 352620, 358497, 398330, 477996, 597495, 716994, 796660, 1075491, 1194990, 1433988, 1792485, 2150982, 2389980, 3584970, 4301964, 5377455, 7169940, 10754910, 21509820]

約数ペア:

[(1, 21509820), (2, 10754910), (3, 7169940), (4, 5377455), (5, 4301964), (6, 3584970), (9, 2389980), (10, 2150982), (12, 1792485), (15, 1433988), (18, 1194990), (20, 1075491), (27, 796660), (30, 716994), (36, 597495), (45, 477996), (54, 398330), (60, 358497), (61, 352620), (90, 238998), (108, 199165), (122, 176310), (135, 159332), (180, 119499), (183, 117540), (244, 88155), (270, 79666), (305, 70524), (366, 58770), (540, 39833), (549, 39180), (610, 35262), (653, 32940), (732, 29385), (915, 23508), (1098, 19590), (1220, 17631), (1306, 16470), (1647, 13060), (1830, 11754), (1959, 10980), (2196, 9795), (2612, 8235), (2745, 7836), (3265, 6588), (3294, 6530), (3660, 5877), (3918, 5490)]