19897956

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 59714928

約数和(自身を除く): 39816972

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 41, 51, 52, 61, 68, 78, 82, 102, 117, 122, 123, 153, 156, 164, 183, 204, 221, 234, 244, 246, 306, 366, 369, 442, 468, 492, 533, 549, 612, 663, 697, 732, 738, 793, 884, 1037, 1066, 1098, 1326, 1394, 1476, 1586, 1599, 1989, 2074, 2091, 2132, 2196, 2379, 2501, 2652, 2788, 3111, 3172, 3198, 3978, 4148, 4182, 4758, 4797, 5002, 6222, 6273, 6396, 7137, 7503, 7956, 8364, 9061, 9333, 9516, 9594, 10004, 12444, 12546, 13481, 14274, 15006, 18122, 18666, 19188, 22509, 25092, 26962, 27183, 28548, 30012, 32513, 36244, 37332, 40443, 42517, 45018, 53924, 54366, 65026, 80886, 81549, 85034, 90036, 97539, 108732, 121329, 127551, 130052, 161772, 163098, 170068, 195078, 242658, 255102, 292617, 326196, 382653, 390156, 485316, 510204, 552721, 585234, 765306, 1105442, 1170468, 1530612, 1658163, 2210884, 3316326, 4974489, 6632652, 9948978, 19897956]

約数ペア:

[(1, 19897956), (2, 9948978), (3, 6632652), (4, 4974489), (6, 3316326), (9, 2210884), (12, 1658163), (13, 1530612), (17, 1170468), (18, 1105442), (26, 765306), (34, 585234), (36, 552721), (39, 510204), (41, 485316), (51, 390156), (52, 382653), (61, 326196), (68, 292617), (78, 255102), (82, 242658), (102, 195078), (117, 170068), (122, 163098), (123, 161772), (153, 130052), (156, 127551), (164, 121329), (183, 108732), (204, 97539), (221, 90036), (234, 85034), (244, 81549), (246, 80886), (306, 65026), (366, 54366), (369, 53924), (442, 45018), (468, 42517), (492, 40443), (533, 37332), (549, 36244), (612, 32513), (663, 30012), (697, 28548), (732, 27183), (738, 26962), (793, 25092), (884, 22509), (1037, 19188), (1066, 18666), (1098, 18122), (1326, 15006), (1394, 14274), (1476, 13481), (1586, 12546), (1599, 12444), (1989, 10004), (2074, 9594), (2091, 9516), (2132, 9333), (2196, 9061), (2379, 8364), (2501, 7956), (2652, 7503), (2788, 7137), (3111, 6396), (3172, 6273), (3198, 6222), (3978, 5002), (4148, 4797), (4182, 4758)]