21419580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3923}}^1$

素因数の和:3955

約数の個数: 96

約数和(自身を含む): 73833984

約数和(自身を除く): 52414404

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 3923, 5460, 7846, 11769, 15692, 19615, 23538, 27461, 39230, 47076, 50999, 54922, 58845, 78460, 82383, 101998, 109844, 117690, 137305, 152997, 164766, 203996, 235380, 254995, 274610, 305994, 329532, 356993, 411915, 509990, 549220, 611988, 713986, 764985, 823830, 1019980, 1070979, 1427972, 1529970, 1647660, 1784965, 2141958, 3059940, 3569930, 4283916, 5354895, 7139860, 10709790, 21419580]

約数ペア:

[(1, 21419580), (2, 10709790), (3, 7139860), (4, 5354895), (5, 4283916), (6, 3569930), (7, 3059940), (10, 2141958), (12, 1784965), (13, 1647660), (14, 1529970), (15, 1427972), (20, 1070979), (21, 1019980), (26, 823830), (28, 764985), (30, 713986), (35, 611988), (39, 549220), (42, 509990), (52, 411915), (60, 356993), (65, 329532), (70, 305994), (78, 274610), (84, 254995), (91, 235380), (105, 203996), (130, 164766), (140, 152997), (156, 137305), (182, 117690), (195, 109844), (210, 101998), (260, 82383), (273, 78460), (364, 58845), (390, 54922), (420, 50999), (455, 47076), (546, 39230), (780, 27461), (910, 23538), (1092, 19615), (1365, 15692), (1820, 11769), (2730, 7846), (3923, 5460)]