20032120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 48405600

約数和(自身を除く): 28373480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 331, 340, 356, 445, 662, 680, 712, 890, 1324, 1513, 1655, 1780, 2648, 3026, 3310, 3560, 5627, 6052, 6620, 7565, 11254, 12104, 13240, 15130, 22508, 28135, 29459, 30260, 45016, 56270, 58918, 60520, 112540, 117836, 147295, 225080, 235672, 294590, 500803, 589180, 1001606, 1178360, 2003212, 2504015, 4006424, 5008030, 10016060, 20032120]

約数ペア:

[(1, 20032120), (2, 10016060), (4, 5008030), (5, 4006424), (8, 2504015), (10, 2003212), (17, 1178360), (20, 1001606), (34, 589180), (40, 500803), (68, 294590), (85, 235672), (89, 225080), (136, 147295), (170, 117836), (178, 112540), (331, 60520), (340, 58918), (356, 56270), (445, 45016), (662, 30260), (680, 29459), (712, 28135), (890, 22508), (1324, 15130), (1513, 13240), (1655, 12104), (1780, 11254), (2648, 7565), (3026, 6620), (3310, 6052), (3560, 5627)]