19656720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1187}}^1$

素因数の和:1229

約数の個数: 120

約数和(自身を含む): 68942016

約数和(自身を除く): 49285296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1187, 1380, 1656, 1840, 2070, 2374, 2760, 3312, 3561, 4140, 4748, 5520, 5935, 7122, 8280, 9496, 10683, 11870, 14244, 16560, 17805, 18992, 21366, 23740, 27301, 28488, 35610, 42732, 47480, 53415, 54602, 56976, 71220, 81903, 85464, 94960, 106830, 109204, 136505, 142440, 163806, 170928, 213660, 218408, 245709, 273010, 284880, 327612, 409515, 427320, 436816, 491418, 546020, 655224, 819030, 854640, 982836, 1092040, 1228545, 1310448, 1638060, 1965672, 2184080, 2457090, 3276120, 3931344, 4914180, 6552240, 9828360, 19656720]

約数ペア:

[(1, 19656720), (2, 9828360), (3, 6552240), (4, 4914180), (5, 3931344), (6, 3276120), (8, 2457090), (9, 2184080), (10, 1965672), (12, 1638060), (15, 1310448), (16, 1228545), (18, 1092040), (20, 982836), (23, 854640), (24, 819030), (30, 655224), (36, 546020), (40, 491418), (45, 436816), (46, 427320), (48, 409515), (60, 327612), (69, 284880), (72, 273010), (80, 245709), (90, 218408), (92, 213660), (115, 170928), (120, 163806), (138, 142440), (144, 136505), (180, 109204), (184, 106830), (207, 94960), (230, 85464), (240, 81903), (276, 71220), (345, 56976), (360, 54602), (368, 53415), (414, 47480), (460, 42732), (552, 35610), (690, 28488), (720, 27301), (828, 23740), (920, 21366), (1035, 18992), (1104, 17805), (1187, 16560), (1380, 14244), (1656, 11870), (1840, 10683), (2070, 9496), (2374, 8280), (2760, 7122), (3312, 5935), (3561, 5520), (4140, 4748)]