21183480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{163}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 73106280

約数和(自身を除く): 51922800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 163, 171, 180, 190, 228, 285, 326, 342, 360, 361, 380, 456, 489, 570, 652, 684, 722, 760, 815, 855, 978, 1083, 1140, 1304, 1368, 1444, 1467, 1630, 1710, 1805, 1956, 2166, 2280, 2445, 2888, 2934, 3097, 3249, 3260, 3420, 3610, 3912, 4332, 4890, 5415, 5868, 6194, 6498, 6520, 6840, 7220, 7335, 8664, 9291, 9780, 10830, 11736, 12388, 12996, 14440, 14670, 15485, 16245, 18582, 19560, 21660, 24776, 25992, 27873, 29340, 30970, 32490, 37164, 43320, 46455, 55746, 58680, 58843, 61940, 64980, 74328, 92910, 111492, 117686, 123880, 129960, 139365, 176529, 185820, 222984, 235372, 278730, 294215, 353058, 371640, 470744, 529587, 557460, 588430, 706116, 882645, 1059174, 1114920, 1176860, 1412232, 1765290, 2118348, 2353720, 2647935, 3530580, 4236696, 5295870, 7061160, 10591740, 21183480]

約数ペア:

[(1, 21183480), (2, 10591740), (3, 7061160), (4, 5295870), (5, 4236696), (6, 3530580), (8, 2647935), (9, 2353720), (10, 2118348), (12, 1765290), (15, 1412232), (18, 1176860), (19, 1114920), (20, 1059174), (24, 882645), (30, 706116), (36, 588430), (38, 557460), (40, 529587), (45, 470744), (57, 371640), (60, 353058), (72, 294215), (76, 278730), (90, 235372), (95, 222984), (114, 185820), (120, 176529), (152, 139365), (163, 129960), (171, 123880), (180, 117686), (190, 111492), (228, 92910), (285, 74328), (326, 64980), (342, 61940), (360, 58843), (361, 58680), (380, 55746), (456, 46455), (489, 43320), (570, 37164), (652, 32490), (684, 30970), (722, 29340), (760, 27873), (815, 25992), (855, 24776), (978, 21660), (1083, 19560), (1140, 18582), (1304, 16245), (1368, 15485), (1444, 14670), (1467, 14440), (1630, 12996), (1710, 12388), (1805, 11736), (1956, 10830), (2166, 9780), (2280, 9291), (2445, 8664), (2888, 7335), (2934, 7220), (3097, 6840), (3249, 6520), (3260, 6498), (3420, 6194), (3610, 5868), (3912, 5415), (4332, 4890)]