18969860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1525

約数の個数: 72

約数和(自身を含む): 49938840

約数和(自身を除く): 30968980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1489, 1820, 2548, 2978, 3185, 5956, 6370, 7445, 10423, 12740, 14890, 19357, 20846, 29780, 38714, 41692, 52115, 72961, 77428, 96785, 104230, 135499, 145922, 193570, 208460, 270998, 291844, 364805, 387140, 541996, 677495, 729610, 948493, 1354990, 1459220, 1896986, 2709980, 3793972, 4742465, 9484930, 18969860]

約数ペア:

[(1, 18969860), (2, 9484930), (4, 4742465), (5, 3793972), (7, 2709980), (10, 1896986), (13, 1459220), (14, 1354990), (20, 948493), (26, 729610), (28, 677495), (35, 541996), (49, 387140), (52, 364805), (65, 291844), (70, 270998), (91, 208460), (98, 193570), (130, 145922), (140, 135499), (182, 104230), (196, 96785), (245, 77428), (260, 72961), (364, 52115), (455, 41692), (490, 38714), (637, 29780), (910, 20846), (980, 19357), (1274, 14890), (1489, 12740), (1820, 10423), (2548, 7445), (2978, 6370), (3185, 5956)]