71881740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:752

約数の個数: 144

約数和(自身を含む): 252383040

約数和(自身を除く): 180501300

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 89, 90, 105, 126, 140, 178, 180, 210, 252, 267, 315, 356, 420, 445, 534, 623, 630, 641, 801, 890, 1068, 1246, 1260, 1282, 1335, 1602, 1780, 1869, 1923, 2492, 2564, 2670, 3115, 3204, 3205, 3738, 3846, 4005, 4487, 5340, 5607, 5769, 6230, 6410, 7476, 7692, 8010, 8974, 9345, 9615, 11214, 11538, 12460, 12820, 13461, 16020, 17948, 18690, 19230, 22428, 22435, 23076, 26922, 28035, 28845, 37380, 38460, 40383, 44870, 53844, 56070, 57049, 57690, 67305, 80766, 89740, 112140, 114098, 115380, 134610, 161532, 171147, 201915, 228196, 269220, 285245, 342294, 399343, 403830, 513441, 570490, 684588, 798686, 807660, 855735, 1026882, 1140980, 1198029, 1597372, 1711470, 1996715, 2053764, 2396058, 2567205, 3422940, 3594087, 3993430, 4792116, 5134410, 5990145, 7188174, 7986860, 10268820, 11980290, 14376348, 17970435, 23960580, 35940870, 71881740]

約数ペア:

[(1, 71881740), (2, 35940870), (3, 23960580), (4, 17970435), (5, 14376348), (6, 11980290), (7, 10268820), (9, 7986860), (10, 7188174), (12, 5990145), (14, 5134410), (15, 4792116), (18, 3993430), (20, 3594087), (21, 3422940), (28, 2567205), (30, 2396058), (35, 2053764), (36, 1996715), (42, 1711470), (45, 1597372), (60, 1198029), (63, 1140980), (70, 1026882), (84, 855735), (89, 807660), (90, 798686), (105, 684588), (126, 570490), (140, 513441), (178, 403830), (180, 399343), (210, 342294), (252, 285245), (267, 269220), (315, 228196), (356, 201915), (420, 171147), (445, 161532), (534, 134610), (623, 115380), (630, 114098), (641, 112140), (801, 89740), (890, 80766), (1068, 67305), (1246, 57690), (1260, 57049), (1282, 56070), (1335, 53844), (1602, 44870), (1780, 40383), (1869, 38460), (1923, 37380), (2492, 28845), (2564, 28035), (2670, 26922), (3115, 23076), (3204, 22435), (3205, 22428), (3738, 19230), (3846, 18690), (4005, 17948), (4487, 16020), (5340, 13461), (5607, 12820), (5769, 12460), (6230, 11538), (6410, 11214), (7476, 9615), (7692, 9345), (8010, 8974)]