21268620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{683}}^1$

素因数の和:871

約数の個数: 72

約数和(自身を含む): 64982736

約数和(自身を除く): 43714116

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 173, 180, 346, 519, 683, 692, 865, 1038, 1366, 1557, 1730, 2049, 2076, 2595, 2732, 3114, 3415, 3460, 4098, 5190, 6147, 6228, 6830, 7785, 8196, 10245, 10380, 12294, 13660, 15570, 20490, 24588, 30735, 31140, 40980, 61470, 118159, 122940, 236318, 354477, 472636, 590795, 708954, 1063431, 1181590, 1417908, 1772385, 2126862, 2363180, 3544770, 4253724, 5317155, 7089540, 10634310, 21268620]

約数ペア:

[(1, 21268620), (2, 10634310), (3, 7089540), (4, 5317155), (5, 4253724), (6, 3544770), (9, 2363180), (10, 2126862), (12, 1772385), (15, 1417908), (18, 1181590), (20, 1063431), (30, 708954), (36, 590795), (45, 472636), (60, 354477), (90, 236318), (173, 122940), (180, 118159), (346, 61470), (519, 40980), (683, 31140), (692, 30735), (865, 24588), (1038, 20490), (1366, 15570), (1557, 13660), (1730, 12294), (2049, 10380), (2076, 10245), (2595, 8196), (2732, 7785), (3114, 6830), (3415, 6228), (3460, 6147), (4098, 5190)]