21718320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6961}}^1$

素因数の和:6990

約数の個数: 80

約数和(自身を含む): 72516192

約数和(自身を除く): 50797872

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6961, 13922, 20883, 27844, 34805, 41766, 55688, 69610, 83532, 90493, 104415, 111376, 139220, 167064, 180986, 208830, 271479, 278440, 334128, 361972, 417660, 452465, 542958, 556880, 723944, 835320, 904930, 1085916, 1357395, 1447888, 1670640, 1809860, 2171832, 2714790, 3619720, 4343664, 5429580, 7239440, 10859160, 21718320]

約数ペア:

[(1, 21718320), (2, 10859160), (3, 7239440), (4, 5429580), (5, 4343664), (6, 3619720), (8, 2714790), (10, 2171832), (12, 1809860), (13, 1670640), (15, 1447888), (16, 1357395), (20, 1085916), (24, 904930), (26, 835320), (30, 723944), (39, 556880), (40, 542958), (48, 452465), (52, 417660), (60, 361972), (65, 334128), (78, 278440), (80, 271479), (104, 208830), (120, 180986), (130, 167064), (156, 139220), (195, 111376), (208, 104415), (240, 90493), (260, 83532), (312, 69610), (390, 55688), (520, 41766), (624, 34805), (780, 27844), (1040, 20883), (1560, 13922), (3120, 6961)]