20259070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 22197890

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 89, 103, 130, 170, 178, 206, 221, 442, 445, 515, 890, 1030, 1105, 1157, 1339, 1513, 1751, 2210, 2314, 2678, 3026, 3502, 5785, 6695, 7565, 8755, 9167, 11570, 13390, 15130, 17510, 18334, 19669, 22763, 39338, 45526, 45835, 91670, 98345, 113815, 119171, 155839, 196690, 227630, 238342, 311678, 595855, 779195, 1191710, 1558390, 2025907, 4051814, 10129535, 20259070]

約数ペア:

[(1, 20259070), (2, 10129535), (5, 4051814), (10, 2025907), (13, 1558390), (17, 1191710), (26, 779195), (34, 595855), (65, 311678), (85, 238342), (89, 227630), (103, 196690), (130, 155839), (170, 119171), (178, 113815), (206, 98345), (221, 91670), (442, 45835), (445, 45526), (515, 39338), (890, 22763), (1030, 19669), (1105, 18334), (1157, 17510), (1339, 15130), (1513, 13390), (1751, 11570), (2210, 9167), (2314, 8755), (2678, 7565), (3026, 6695), (3502, 5785)]