217209720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19891}}^1$

素因数の和:19925

約数の個数: 128

約数和(自身を含む): 802045440

約数和(自身を除く): 584835720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 10920, 19891, 39782, 59673, 79564, 99455, 119346, 139237, 159128, 198910, 238692, 258583, 278474, 298365, 397820, 417711, 477384, 517166, 556948, 596730, 696185, 775749, 795640, 835422, 1034332, 1113896, 1193460, 1292915, 1392370, 1551498, 1670844, 1810081, 2068664, 2088555, 2386920, 2585830, 2784740, 3102996, 3341688, 3620162, 3878745, 4177110, 5171660, 5430243, 5569480, 6205992, 7240324, 7757490, 8354220, 9050405, 10343320, 10860486, 14480648, 15514980, 16708440, 18100810, 21720972, 27151215, 31029960, 36201620, 43441944, 54302430, 72403240, 108604860, 217209720]

約数ペア:

[(1, 217209720), (2, 108604860), (3, 72403240), (4, 54302430), (5, 43441944), (6, 36201620), (7, 31029960), (8, 27151215), (10, 21720972), (12, 18100810), (13, 16708440), (14, 15514980), (15, 14480648), (20, 10860486), (21, 10343320), (24, 9050405), (26, 8354220), (28, 7757490), (30, 7240324), (35, 6205992), (39, 5569480), (40, 5430243), (42, 5171660), (52, 4177110), (56, 3878745), (60, 3620162), (65, 3341688), (70, 3102996), (78, 2784740), (84, 2585830), (91, 2386920), (104, 2088555), (105, 2068664), (120, 1810081), (130, 1670844), (140, 1551498), (156, 1392370), (168, 1292915), (182, 1193460), (195, 1113896), (210, 1034332), (260, 835422), (273, 795640), (280, 775749), (312, 696185), (364, 596730), (390, 556948), (420, 517166), (455, 477384), (520, 417711), (546, 397820), (728, 298365), (780, 278474), (840, 258583), (910, 238692), (1092, 198910), (1365, 159128), (1560, 139237), (1820, 119346), (2184, 99455), (2730, 79564), (3640, 59673), (5460, 39782), (10920, 19891)]