21707460

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:738

約数の個数: 96

約数和(自身を含む): 68745600

約数和(自身を除く): 47038140

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, 659, 732, 915, 1098, 1220, 1318, 1647, 1830, 1977, 2196, 2636, 2745, 3294, 3295, 3660, 3954, 5490, 5931, 6588, 6590, 7908, 8235, 9885, 10980, 11862, 13180, 16470, 17793, 19770, 23724, 29655, 32940, 35586, 39540, 40199, 59310, 71172, 80398, 88965, 118620, 120597, 160796, 177930, 200995, 241194, 355860, 361791, 401990, 482388, 602985, 723582, 803980, 1085373, 1205970, 1447164, 1808955, 2170746, 2411940, 3617910, 4341492, 5426865, 7235820, 10853730, 21707460]

約数ペア:

[(1, 21707460), (2, 10853730), (3, 7235820), (4, 5426865), (5, 4341492), (6, 3617910), (9, 2411940), (10, 2170746), (12, 1808955), (15, 1447164), (18, 1205970), (20, 1085373), (27, 803980), (30, 723582), (36, 602985), (45, 482388), (54, 401990), (60, 361791), (61, 355860), (90, 241194), (108, 200995), (122, 177930), (135, 160796), (180, 120597), (183, 118620), (244, 88965), (270, 80398), (305, 71172), (366, 59310), (540, 40199), (549, 39540), (610, 35586), (659, 32940), (732, 29655), (915, 23724), (1098, 19770), (1220, 17793), (1318, 16470), (1647, 13180), (1830, 11862), (1977, 10980), (2196, 9885), (2636, 8235), (2745, 7908), (3294, 6590), (3295, 6588), (3660, 5931), (3954, 5490)]