19777290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:216

約数の個数: 128

約数和(自身を含む): 57335040

約数和(自身を除く): 37557750

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 17, 19, 26, 30, 34, 38, 39, 51, 57, 65, 78, 85, 95, 102, 114, 130, 157, 170, 190, 195, 221, 247, 255, 285, 314, 323, 390, 442, 471, 494, 510, 570, 646, 663, 741, 785, 942, 969, 1105, 1235, 1326, 1482, 1570, 1615, 1938, 2041, 2210, 2355, 2470, 2669, 2983, 3230, 3315, 3705, 4082, 4199, 4710, 4845, 5338, 5966, 6123, 6630, 7410, 8007, 8398, 8949, 9690, 10205, 12246, 12597, 13345, 14915, 16014, 17898, 20410, 20995, 25194, 26690, 29830, 30615, 34697, 38779, 40035, 41990, 44745, 50711, 61230, 62985, 69394, 77558, 80070, 89490, 101422, 104091, 116337, 125970, 152133, 173485, 193895, 208182, 232674, 253555, 304266, 346970, 387790, 507110, 520455, 581685, 659243, 760665, 1040910, 1163370, 1318486, 1521330, 1977729, 3296215, 3955458, 6592430, 9888645, 19777290]

約数ペア:

[(1, 19777290), (2, 9888645), (3, 6592430), (5, 3955458), (6, 3296215), (10, 1977729), (13, 1521330), (15, 1318486), (17, 1163370), (19, 1040910), (26, 760665), (30, 659243), (34, 581685), (38, 520455), (39, 507110), (51, 387790), (57, 346970), (65, 304266), (78, 253555), (85, 232674), (95, 208182), (102, 193895), (114, 173485), (130, 152133), (157, 125970), (170, 116337), (190, 104091), (195, 101422), (221, 89490), (247, 80070), (255, 77558), (285, 69394), (314, 62985), (323, 61230), (390, 50711), (442, 44745), (471, 41990), (494, 40035), (510, 38779), (570, 34697), (646, 30615), (663, 29830), (741, 26690), (785, 25194), (942, 20995), (969, 20410), (1105, 17898), (1235, 16014), (1326, 14915), (1482, 13345), (1570, 12597), (1615, 12246), (1938, 10205), (2041, 9690), (2210, 8949), (2355, 8398), (2470, 8007), (2669, 7410), (2983, 6630), (3230, 6123), (3315, 5966), (3705, 5338), (4082, 4845), (4199, 4710)]